共查询到20条相似文献,搜索用时 15 毫秒
1.
Aleksandra N. Mikheeva Ilya E. Kuznetsov Marina M. Tepliakova Aly Elakshar Mikhail V. Gapanovich Yuri G. Gladush Evgenia O. Perepelitsina Maxim E. Sideltsev Azaliia F. Akhkiamova Alexey A. Piryazev Albert G. Nasibulin Alexander V. Akkuratov 《Molecules (Basel, Switzerland)》2022,27(23)
Donor-acceptor conjugated polymers are considered advanced semiconductor materials for the development of thin-film electronics. One of the most attractive families of polymeric semiconductors in terms of photovoltaic applications are benzodithiophene-based polymers owing to their highly tunable electronic and physicochemical properties, and readily scalable production. In this work, we report the synthesis of three novel push–pull benzodithiophene-based polymers with different side chains and their investigation as hole transport materials (HTM) in perovskite solar cells (PSCs). It is shown that polymer P3 that contains triisopropylsilyl side groups exhibits better film-forming ability that, along with high hole mobilities, results in increased characteristics of PSCs. Encouraging a power conversion efficiency (PCE) of 17.4% was achieved for P3-based PSCs that outperformed the efficiency of devices based on P1, P2, and benchmark PTAA polymer. These findings feature the great potential of benzodithiophene-based conjugated polymers as dopant-free HTMs for the fabrication of efficient perovskite solar cells. 相似文献
2.
3,4‐Phenylenedioxythiophene (PheDOT) Based Hole‐Transporting Materials for Perovskite Solar Cells 下载免费PDF全文
Jian Chen Bai‐Xue Chen Fang‐Shuai Zhang Hui‐Juan Yu Shuang Ma Prof. Dr. Dai‐Bin Kuang Dr. Guang Shao Prof. Dr. Cheng‐Yong Su 《化学:亚洲杂志》2016,11(7):1043-1049
Two new electron‐rich molecules based on 3,4‐phenylenedioxythiophene (PheDOT) were synthesized and successfully adopted as hole‐transporting materials (HTMs) in perovskite solar cells (PSCs). X‐ray diffraction, absorption spectra, photoluminescence spectra, electrochemical properties, thermal stabilities, hole mobilities, conductivities, and photovoltaic parameters of PSCs based on these two HTMs were compared with each other. By introducing methoxy substituents into the main skeleton, the energy levels of PheDOT‐core HTM were tuned to match with the perovskite, and its hole mobility was also improved (1.33×10?4 cm2 V?1 s?1, being higher than that of spiro‐OMeTAD, 2.34×10?5 cm2 V?1 s?1). The PSC based on MeO‐PheDOT as HTM exhibits a short‐circuit current density (Jsc) of 18.31 mA cm?2, an open‐circuit potential (Voc) of 0.914 V, and a fill factor (FF) of 0.636, yielding an encouraging power conversion efficiency (PCE) of 10.64 % under AM 1.5G illumination. These results give some insight into how the molecular structures of HTMs affect their performances and pave the way for developing high‐efficiency and low‐cost HTMs for PSCs. 相似文献
3.
Efficient Hole‐Transporting Materials with Triazole Core for High‐Efficiency Perovskite Solar Cells 下载免费PDF全文
Dr. Hyeju Choi Hyeonjun Jo Dr. Sanghyun Paek Kyungkuk Koh Prof. Dr. Haye Min Ko Prof. Dr. Jae Kwan Lee Prof. Dr. Jaejung Ko 《化学:亚洲杂志》2016,11(4):548-554
Efficient hole‐transporting materials (HTMs), TAZ‐[MeOTPA]2 and TAZ‐[MeOTPATh]2 incorporating two electron‐rich diphenylamino side arms, through direct linkage or thiophen bridges, respectively, on the C3‐ and C5‐positions of a 4‐phenyl‐1,2,4‐triazole core were synthesized. These synthetic HTMs with donor–acceptor type molecular structures exhibited effective intramolecular charge transfer for improving the hole‐transporting properties. The structural modification of HTMs by thiophene bridging might increase intermolecular π–π stacking in the solid state and afford a better spectral response because of their increased π‐conjugation length. Perovskite‐based cells using TAZ‐[MeOTPA]2 and TAZ‐[MeOTPATh]2 as HTMs afforded high power conversion efficiencies of 10.9 % and 14.4 %, respectively, showing a photovoltaic performance comparable to that obtained using spiro‐OMeTAD. These synthetically simple and inexpensive HTMs hold promise for replacing the more expensive spiro‐OMeTAD in high‐efficiency perovskite solar cells. 相似文献
4.
Hexaazatrinaphthylene Derivatives: Efficient Electron‐Transporting Materials with Tunable Energy Levels for Inverted Perovskite Solar Cells 下载免费PDF全文
Dr. Dongbing Zhao Dr. Zonglong Zhu Prof. Dr. Ming‐Yu Kuo Dr. Chu‐Chen Chueh Prof. Dr. Alex K.‐Y. Jen 《Angewandte Chemie (International ed. in English)》2016,55(31):8999-9003
Hexaazatrinaphthylene (HATNA) derivatives have been successfully shown to function as efficient electron‐transporting materials (ETMs) for perovskite solar cells (PVSCs). The cells demonstrate a superior power conversion efficiency (PCE) of 17.6 % with negligible hysteresis. This study provides one of the first nonfullerene small‐molecule‐based ETMs for high‐performance p–i–n PVSCs. 相似文献
5.
Kasparas Rakstys Dr. Michael Saliba Dr. Peng Gao Paul Gratia Egidijus Kamarauskas Dr. Sanghyun Paek Dr. Vygintas Jankauskas Prof. Dr. Mohammad Khaja Nazeeruddin 《Angewandte Chemie (International ed. in English)》2016,55(26):7464-7468
The 4,4′‐dimethoxydiphenylamine‐substituted 9,9′‐bifluorenylidene ( KR216 ) hole transporting material has been synthesized using a straightforward two‐step procedure from commercially available and inexpensive starting reagents, mimicking the synthetically challenging 9,9′‐spirobifluorene moiety of the well‐studied spiro‐OMeTAD. A power conversion efficiency of 17.8 % has been reached employing a novel HTM in a perovskite solar cells. 相似文献
6.
A Simple 3,4‐Ethylenedioxythiophene Based Hole‐Transporting Material for Perovskite Solar Cells 下载免费PDF全文
Dr. Hairong Li Kunwu Fu Prof. Anders Hagfeldt Prof. Michael Grätzel Prof. Subodh G. Mhaisalkar Prof. Andrew C. Grimsdale 《Angewandte Chemie (International ed. in English)》2014,53(16):4085-4088
We report a novel electron‐rich molecule based on 3,4‐ethylenedioxythiophene (H101). When used as the hole‐transporting layer in a perovskite‐based solar cell, the power‐conversion efficiency reached 13.8 % under AM 1.5G solar simulation. This result is comparable with that obtained using the well‐known hole transporting material 2,2′,7,7′‐tetrakis(N,N‐di‐p‐methoxyphenylamine)‐9,9′‐spirobifluorene (spiro‐OMeTAD). This is the first heterocycle‐containing material achieving >10 % efficiency in such devices, and has great potential to replace the expensive spiro‐OMeTAD given its much simpler and cheaper synthesis. 相似文献
7.
Lowering Molecular Symmetry To Improve the Morphological Properties of the Hole‐Transport Layer for Stable Perovskite Solar Cells 下载免费PDF全文
Dr. Xuchao Wang Jing Zhang Dr. Shuwen Yu Dr. Wei Yu Dr. Ping Fu Xuan Liu Dandan Tu Prof. Xin Guo Prof. Can Li 《Angewandte Chemie (International ed. in English)》2018,57(38):12529-12533
Inspired by the structural feature of the classical hole‐transport material (HTM), Spiro‐OMeTAD, many analogues based on a highly symmetrical spiro‐core were reported for perovskite solar cells (PSCs). However, these HTMs were prone to crystallize because of the high molecular symmetry, forming non‐uniform films, unfavorable for the device stability and large‐area processing. By lowering the symmetry of spiro‐core, we report herein a novel spirobisindane‐based HTM, Spiro‐I, which could form amorphous films with high uniformity and morphological stability. Compared to the Spiro‐OMeTAD‐based PSCs, those containing Spiro‐I exhibit similar efficiencies for small area but higher ones for large area (1 cm2), and especially much higher air stability (retaining 80 % of initial PCE after 2400 h storage without encapsulation). Moreover, the Spiro‐I can be synthesized from a cheap starting material bisphenol A and used with a small amount for the device fabrication. 相似文献
8.
Adam Wincukiewicz Ewelina Wierzyska Aliaksei Bohdan Mateusz Tokarczyk Krzysztof P. Korona Magdalena Skompska Maria Kamiska 《Molecules (Basel, Switzerland)》2022,27(22)
High-quality perovskite film with large grains and therefore reduced grain boundaries plays a significant role in improving the power conversion efficiency (PCE) and ensuring good long-term stability of the perovskite solar cells. In this work, we found that adding camphorsulfonic acid (CSA), a Lewis base, to the perovskite solution results in the crystallization of larger perovskite grains. By varying the concentration of CSA, we found that the optimal concentration of the additive is 1 mg/mL, which leads to an 20% increase in PCE of the cells compared to the reference CSA-free cell. Interestingly, we observed that the PCE of cells with an excess of CSA was initially poor, but may increase significantly over time, possibly due to CSA migration to the hole-transporting layer, leading to an improvement in its conductivity. 相似文献
9.
Facile Synthesis of a Furan–Arylamine Hole‐Transporting Material for High‐Efficiency,Mesoscopic Perovskite Solar Cells 下载免费PDF全文
Jun Yin Dr. Annalisa Bruno Dr. Pablo P. Boix Yang Gao Dr. Herlina A. Dewi Dr. Gagik G. Gurzadyan Prof. Cesare Soci Prof. Subodh G. Mhaisalkar Prof. Andrew C. Grimsdale 《Chemistry (Weinheim an der Bergstrasse, Germany)》2015,21(43):15113-15117
A novel hole‐transporting molecule (F101) based on a furan core has been synthesized by means of a short, high‐yielding route. When used as the hole‐transporting material (HTM) in mesoporous methylammonium lead halide perovskite solar cells (PSCs) it produced better device performance than the current state‐of‐the‐art HTM 2,2′,7,7′‐tetrakis‐(N,N‐di‐p‐methoxyphenylamine)‐9,9′‐spirobifluorene (spiro‐OMeTAD). The F101‐HTM‐based device exhibited both slightly higher Jsc (19.63 vs. 18.41 mA cm?2) and Voc (1.1 vs. 1.05 V) resulting in a marginally higher power conversion efficiency (PCE) (13.1 vs. 13 %). The steady‐state and time‐resolved photoluminescence show that F101 has significant charge extraction ability. The simple molecular structure, short synthesis route with high yield and better performance in devices makes F101 an excellent candidate for replacing the expensive spiro‐OMeTAD as HTM in PSCs. 相似文献
10.
A Fast Deposition‐Crystallization Procedure for Highly Efficient Lead Iodide Perovskite Thin‐Film Solar Cells 下载免费PDF全文
Manda Xiao Dr. Fuzhi Huang Wenchao Huang Yasmina Dkhissi Dr. Ye Zhu Prof. Dr. Joanne Etheridge Dr. Angus Gray‐Weale Prof. Dr. Udo Bach Prof. Dr. Yi‐Bing Cheng Prof. Dr. Leone Spiccia 《Angewandte Chemie (International ed. in English)》2014,53(37):9898-9903
Thin‐film photovoltaics based on alkylammonium lead iodide perovskite light absorbers have recently emerged as a promising low‐cost solar energy harvesting technology. To date, the perovskite layer in these efficient solar cells has generally been fabricated by either vapor deposition or a two‐step sequential deposition process. We report that flat, uniform thin films of this material can be deposited by a one‐step, solvent‐induced, fast crystallization method involving spin‐coating of a DMF solution of CH3NH3PbI3 followed immediately by exposure to chlorobenzene to induce crystallization. Analysis of the devices and films revealed that the perovskite films consist of large crystalline grains with sizes up to microns. Planar heterojunction solar cells constructed with these solution‐processed thin films yielded an average power conversion efficiency of 13.9±0.7 % and a steady state efficiency of 13 % under standard AM 1.5 conditions. 相似文献
11.
Carbon‐Electrode‐Tailored All‐Inorganic Perovskite Solar Cells To Harvest Solar and Water‐Vapor Energy 下载免费PDF全文
Dr. Jialong Duan Tianyu Hu Dr. Yuanyuan Zhao Prof. Benlin He Prof. Qunwei Tang 《Angewandte Chemie (International ed. in English)》2018,57(20):5746-5749
Moisture is the worst enemy for state‐of‐the‐art perovskite solar cells (PSCs). However, the flowing water vapor within nanoporous carbonaceous materials can create potentials. Therefore, it is a challenge to integrate water vapor and solar energies into a single PSC device. We demonstrate herein all‐inorganic cesium lead bromide (CsPbBr3) solar cells tailored with carbon electrodes to simultaneously harvest solar and water‐vapor energy. Upon interfacial modification and plasma treatment, the bifunctional PSCs yield a maximum power conversion efficiency up to 9.43 % under one sun irradiation according to photoelectric conversion principle and a power output of 0.158 μW with voltage of 0.35 V and current of 0.45 μA in 80 % relative humidity through the flowing potentials at the carbon/water interface. The initial efficiency is only reduced by 2 % on exposing the inorganic PSC with 80 % humidity over 40 days. The successful realization of physical proof‐of‐concept multi‐energy integrated solar cells provides new opportunities of maximizing overall power output. 相似文献
12.
Organic–inorganic halide perovskite solar cells (PSCs) have attracted much attention due to their rapid increase in power conversion efficiencies (PCEs), and many efforts are devoted to further improving the PCEs. Designing highly efficient hole transport materials (HTMs) for PSCs may be one of the effective ways. Herein we theoretically designed three new HTMs (FDT−N, FDT−O, and FDT−S) by introducing a nitrogen-phenyl group, an oxygen atom, and a sulfur atom into the spiro core of an experimentally synthesized HTM (FDT), respectively. And then we performed quantum chemical calculation to study their application potential. The results show that the devices with FDT−O and FDT−S instead of FDT may have higher open circuit voltages owing to their lower highest occupied molecular orbital (HOMO) energy levels. Moreover, FDT−S exhibits the best hole transport performance among the studied HTMs, which may be due to the significant HOMO-HOMO overlap in the hole hopping path with the largest transfer integral. Furthermore, the results on interface properties indicate that introducing oxygen and sulfur atoms can enhance the MAPbI3/HTM interface interaction. The present work not only offers two promising HTMs (FDT−O and FDT−S) for PSCs but also provides theoretical help for subsequent research on HTMs. 相似文献
13.
Dr. Agustín Molina‐Ontoria Dr. Iwan Zimmermann Inés Garcia‐Benito Paul Gratia Dr. Cristina Roldán‐Carmona Sadig Aghazada Prof. Dr. Michael Graetzel Prof. Dr. Mohammad Khaja Nazeeruddin Prof. Dr. Nazario Martín 《Angewandte Chemie (International ed. in English)》2016,55(21):6270-6274
New star‐shaped benzotrithiophene (BTT)‐based hole‐transporting materials (HTM) BTT‐1, BTT‐2 and BTT‐3 have been obtained through a facile synthetic route by crosslinking triarylamine‐based donor groups with a benzotrithiophene (BTT) core. The BTT HTMs were tested on solution‐processed lead trihalide perovskite‐based solar cells. Power conversion efficiencies in the range of 16 % to 18.2 % were achieved under AM 1.5 sun with the three derivatives. These values are comparable to those obtained with today's most commonly used HTM spiro‐OMeTAD, which point them out as promising candidates to be used as readily available and cost‐effective alternatives in perovskite solar cells (PSCs). 相似文献
14.
An Azaacene Derivative as Promising Electron‐Transport Layer for Inverted Perovskite Solar Cells 下载免费PDF全文
Dr. Pei‐Yang Gu Dr. Ning Wang Anyang Wu Zilong Wang Dr. Miaomiao Tian Prof. Dr. Zhisheng Fu Prof. Dr. Xiao Wei Sun Prof. Dr. Qichun Zhang 《化学:亚洲杂志》2016,11(15):2135-2138
It is highly desirable to develop novel n‐type organic small molecules as an efficient electron‐transport layer (ETL) for the replacement of PCBM to obtain high‐performance metal‐oxide‐free, solution‐processed inverted perovskite solar cells (PSCs) because this type of solar cells with a low‐temperature and solution‐based process would make their fabrication more feasible and practical. In this research, the new azaacene QCAPZ has been synthesized and employed as non‐fullerene ETL material for inverted PSCs through a solution‐based process without the need for additional dopants or additives. The as‐fabricated inverted PSCs show a power conversion efficiency up to 10.26 %. Our results clearly suggest that larger azaacenes could be promising electron‐transport materials to achieve high‐performance solution‐processed inverted PSCs. 相似文献
15.
Jialong Duan Yudi Wang Xiya Yang Qunwei Tang 《Angewandte Chemie (International ed. in English)》2020,59(11):4391-4395
Improved charge extraction and wide spectral absorption promote power conversion efficiency of perovskite solar cells (PSCs). The state‐of‐the‐art carbon‐based CsPbBr3 PSCs have an inferior power output capacity because of the large optical band gap of the perovskite film and the high energy barrier at perovskite/carbon interface. Herein, we use alkyl‐chain regulated quantum dots as hole‐conductors to reduce charge recombination. By precisely controlling alkyl‐chain length of ligands, a balance between the surface dipole induced charge coulomb repulsive force and quantum tunneling distance is achieved to maximize charge extraction. A fluorescent carbon electrode is used as a cathode to harvest the unabsorbed incident light and to emit fluorescent light at 516 nm for re‐absorption by the perovskite film. The optimized PSC free of encapsulation achieves a maximum power conversion efficiency up to 10.85 % with nearly unchanged photovoltaic performances under 80 %RH, 80 °C, or light irradiation in air. 相似文献
16.
17.
Prospects of Graphene as a Potential Carrier‐Transport Material in Third‐Generation Solar Cells 下载免费PDF全文
Towhid H. Chowdhury Ashraful Islam A. K. Mahmud Hasan M. Asri Mat Terdi M. Arunakumari Surya Prakash Singh Md. Khorshed Alam Idriss M. Bedja Mohd Hafidz Ruslan Kamaruzzaman Sopian Nowshad Amin Md. Akhtaruzzaman 《Chemical record (New York, N.Y.)》2016,16(2):614-632
Third‐generation solar cells are understood to be the pathway to overcoming the issues and drawbacks of the existing solar cell technologies. Since the introduction of graphene in solar cells, it has been providing attractive properties for the next generation of solar cells. Currently, there are more theoretical predictions rather than practical recognitions in third‐generation solar cells. Some of the potential of graphene has been explored in organic photovoltaics (OPVs) and dye‐sensitized solar cells (DSSCs), but it has yet to be fully comprehended in the recent third‐generation inorganic–organic hybrid perovskite solar cells. In this review, the diverse role of graphene in third‐generation OPVs and DSSCs will be deliberated to provide an insight on the prospects and challenges of graphene in inorganic–organic hybrid perovskite solar cells. 相似文献
18.
Bing Wang Meng Zhang Xun Cui Zewei Wang Matthew Rager Yingkui Yang Zhigang Zou Zhong Lin Wang Zhiqun Lin 《Angewandte Chemie (International ed. in English)》2020,59(4):1611-1618
The ability to effectively transfer photoexcited electrons and holes is an important endeavor toward achieving high‐efficiency solar energy conversion. Now, a simple yet robust acid‐treatment strategy is used to judiciously create an amorphous TiO2 buffer layer intimately situated on the anatase TiO2 surface as an electron‐transport layer (ETL) for efficient electron transport. The facile acid treatment is capable of weakening the bonding of zigzag octahedral chains in anatase TiO2, thereby shortening staggered octahedron chains to form an amorphous buffer layer on the anatase TiO2 surface. Such amorphous TiO2‐coated ETL possesses an increased electron density owing to the presence of oxygen vacancies, leading to efficient electron transfer from perovskite to TiO2. Compared to pristine TiO2‐based devices, the perovskite solar cells (PSCs) with acid‐treated TiO2 ETL exhibit an enhanced short‐circuit current and power conversion efficiency. 相似文献
19.
Dong Yang Ruixia Yang Shashank Priya Shengzhong Liu 《Angewandte Chemie (International ed. in English)》2019,58(14):4466-4483
Flexible perovskite solar cells have attracted widespread research effort because of their potential in portable electronics. The efficiency has exceeded 18 % owing to the high‐quality perovskite film achieved by various low‐temperature fabrication methods and matching of the interface and electrode materials. This Review focuses on recent progress in flexible perovskite solar cells concerning low‐temperature fabrication methods to improve the properties of perovskite films, such as full coverage, uniform morphology, and good crystallinity; demonstrated interface layers used in flexible perovskite solar cells, considering key figures‐of‐merit such as high transmittance, high carrier mobility, suitable band gap, and easy fabrication via low‐temperature methods; flexible transparent electrode materials developed to enhance the mechanical stability of the devices; mechanical and long‐term environmental stability; an outlook of flexible perovskite solar cells in portable electronic devices; and perspectives of commercialization for flexible perovskite solar cells based on cost. 相似文献