共查询到20条相似文献,搜索用时 15 毫秒
1.
The kesterite Cu2ZnSn(S,Se)4(CZTSSe) is an ideal candidate for light harvesting materials in earth-abundant low-cost thinfilm solar cells(TFSC). Although the solution-based processing is a most promising approach to achieve low-cost solar cells with high power conversion efficiency, the issues of poor crystallinity and carbon residue in CZTSSe thin films are still challenging. Herein, a non-hydrazine solution-based method was reported to fabricate highly crystallized and carbon-free kesterite CZTSSe thin films. Interestingly, it was found that the synthetic atmosphere of metal organic precursors have a dramatic impact on the morphology and crystallinity of CZTSSe films. By optimizing the processing parameters, we were able to obtain a kesterite CZTSSe film composed of compact large crystal grains with trace carbon residues. Also, a viable reactive ion etching(RIE) processing with optimized etching conditions was then developed to successfully eliminate trace carbon residues on the surface of the CZTSSe film. 相似文献
2.
The kesterite-structured semiconductor Cu2ZnSn(S,Se)4 (CZTSSe) is prepared by spin coating a non-hydrazine precursor and annealing at Se atmosphere. Local electrical and optoelectronic properties of the CZTSSe thin-film are explored by Kelvin probe force microscopy and conductive atomic force microscopy. Before and after irradiation, no marked potential bending and very low current flow are observed at GBs, suggesting that GBs behave as a charge recombination site and an obstacle for charge transport. Furthermore, CdS nano-islands are synthesized via successive ionic layer adsorption and reaction (SILAR) method on the surface of CZTSSe. By comparing the work function and current flow change of CZTSSe and CdS in dark and under illumination, we demonstrate photo-induced electrons and holes are separated at the interface of p-n junction and transferred in CdS and CZTSSe, respectively. 相似文献
3.
4.
CdTe和Cu(In,Ga)(S,Se)2 (CIGSSe)光吸收材料在新型化合物半导体太阳电池研究中占据着主导地位。尽管CdTe和CIGS太阳电池拥有较高的转换效率和先进的技术,但是仍存在着一些问题,如所用材料中的元素地壳丰度低或有毒,这阻碍了其未来的大规模应用。近年来,由于Cu2ZnSn(S,Se)4 (CZTSSe)薄膜太阳电池使用的元素地壳含量丰富且环境友好,逐渐成为了研究的热点。CZTSSe光吸收材料被认为能够取代CdTe和CIGS成为下一代光伏技术的潜力材料。基于此,本文将简单介绍CZTSSe材料的结构、性质和制备方法。重点阐述CZTSSe材料的组装技术和沉积方法的发展和优势,如基于真空的沉积方法和基于溶液的沉积方法,简述其优缺点。此外,本文对CZTSSe组装和CZTSSe纳米晶制备方法的最新研究进展也进行了总结。最后,对CZTSSe光伏技术的一些限制因素进行了分析,并对CZTSSe薄膜电池未来的研究前景进行了展望。 相似文献
5.
Cu2ZnSnS4 kesterite nanoparticles (CZTS) with a particle diameter of 10–20 nm are prepared by a polyol-mediated synthesis with diethylene glycol as the liquid phase. The polyol – a high-boiling multidentate alcohol − allows controlling the particle size and agglomeration as well as preparing readily crystalline nanoparticles. The as-prepared kesterite nanoparticles exhibit an overall composition of Cu1.56Zn1.29Sn1.16S4.59 and a band gap of 1.37 eV. As a first test, thin-film solar cells are manufactured after layer deposition of the as-prepared CZTS nanoparticles and conversion to Cu2ZnSn(S,Se)4 (CZTSSe) via gas-phase selenization. The volume increase of about 15% due to the CZTS-to-CZTSSe conversion supports the formation of a dense layer, reduces the interparticulate surfaces and leads to a reduction of the band gap to 1.14 eV. The chemical composition of the as-prepared CZTS nanoparticles and of the deposited CZTSSe thin film prior and after selenization are studied in detail by energy-dispersive X-ray spectroscopy, Raman spectroscopy and X-ray fluorescence analysis. All these methods confirm the intended copper-poor and zinc-/tin-rich CZTS/CZTSSe composition. The resulting thin-film solar cells show an open-circuit voltage of 247.3 mV, a short-circuit current density of 21.3 mA/cm2, a fill factor of 41.1% and a power-conversion efficiency of 2.2%. 相似文献
6.
7.
在2-氨基噻唑存在下,利用铜粉和过氧化苯甲酰的氧比加成反应,在丙酮中合成了双核铜(Ⅱ)配合物[Cu_2(C_6H_5COO)_4(C_3H_4N_2S)2].晶体属单斜晶系,P21/n空间群,晶胞参数:a=1.0685(1)nm,b=1.9028(6)nm,c=1.7046(9)nm;α=γ=90°,β=96.49(3)°,V=3.443(4)nm~3,Z=4.F(000)=824,Dc=1.5558g/cm~3,μ=14.078cm~(-1),最终偏离因子R=0.04821,Rw=0.05314.通过元素分析、IR、TG、X射线粉末衍射表征了配合物的结构. 相似文献
8.
9.
《结构化学》1987,(3)
<正> INTRODUCTION. The complexes of some transition metals with plant growth regulators still have growth-regulating activity. For example the copper(Ⅱ) chelates of N-phenyl thalaminic acid derivatives are this type complexes. We have synthesized complex of Cu(Ⅱ) with β-naphthoxyacetic acid which has the action of stimulating plant growth. The crystal structure of Cu_2(β-C_(10)oH_7OCH_2COO)_4(DMF)_2 has been determined. 相似文献
10.
We report a new platform for design of soluble precursors for CuInSe(2) (CIS), Cu(In(1-x)Ga(x))Se(2) (CIGS), and Cu(2)ZnSn(S,Se)(4) (CZTS) phases for thin-film potovoltaics. To form these complex phases, we used colloidal nanocrystals (NCs) with metal chalcogenide complexes (MCCs) as surface ligands. The MCC ligands both provided colloidal stability and represented essential components of target phase. To obtain soluble precursors for CuInSe(2), we used Cu(2-x)Se NCs capped with In(2)Se(4)(2-) MCC surface ligands or CuInSe(2) NCs capped with {In(2)Cu(2)Se(4)S(3)}(3-) MCCs. A mixture of Cu(2-x)Se and ZnS NCs, both capped with Sn(2)S(6)(4-) or Sn(2)Se(6)(4-) ligands was used for solution deposition of CZTS films. Upon thermal annealing, the inorganic ligands reacted with NC cores forming well-crystallized pure ternary and quaternary phases. Solution-processed CIS and CZTS films featured large grain size and high phase purity, confirming the prospects of this approach for practical applications. 相似文献
11.
1 INTRODUCTION As we all know, copper is a necessary trace element for human body. For example, a large number of bi- nuclear or multi-nuclear transition metallic complex- es exist in active centers of some metalloprotein[1]. In the 1960’s, Bertand and Bock et al[2] reported the first tetra-nuclear copper complex with Cu4O3 unit. In 1996, a cyclo-tetranucleate complex bridged by pyridine was synthesized by Zhang Hua etc[3]. In 1999, Tan Xiangshi and coworkers[4] presented a cubic tet… 相似文献
12.
《结构化学》1989,(2)
<正> [Me4N]6[Ag6(i-mnt)6].H2O(1),[Et4N]4[Cu8(i-mnt)6](2) and [Me4N]4-[Cu5Ag3(i-mnt)6].H2O(3)(i-mnt=S2C=C(CN)2) were synthesized. The crystal and molecular structure of the complex 1 was reported by us.The structure of the complex 2 was determined from single crystal X-ray diffraction data. [Et4N]4[Cu8(i-mnt)s] 2, Mr=1870.46, monoclinic, P21/n, a=14.724(6), b = 17.228(3), c=15.59(1)A,β= 100.75(7)°,V=3886.3A3;Z = 2,Dc= 1.598 g/cm3. Complex 3 has been characterized by ICP elemental analyses and IR spectrum. 相似文献
13.
<正> C30H30Cu4I2S4MoN6,Mr=1206, orthorhombic, Fdd2, a = 22. 511(4), b= 22.946(4), c=30. 742(6)(?), Z = 16, Dc = 2. 019g/cm3, V = 15879.4 (?)3, μ = 41. 884cm-1, F (000) = 9280. The final R factor is 0. 0279 for 1884 observed reflections with I>3σ(I). Crystal structure analysis shows that the MoS4Cu4 aggregate is formed, each the four copper atoms is linked with two S atoms of the te-trahedral MoS42- core. The average distance between Mo and Cu atoms is 2. 678(?). 相似文献
14.
《结构化学》1990,(2)
<正> W4S4 [S2P (OEt)2]6, Mr= 1974. 94, triclinic, P1, a = 14. 063 (5) , b = 16. 289(4), c= 13. 377(3) A ,α=92. 06 (2), β=95. 24(3), γ= 73. 06(2)°, V= 2919(3)A3,Z=2,DC=2. 18g/cm3, Moka radiation,λ =0. 71069A ,μ = 90. 64cm-1, F(000) = 1764,R=0. 053 and Rw = 0. 069 for 5422 reflections with I≥3σ(I).The title compound is comprised of a cubane-like cluster core [W4S4] in which every W atom is coordinated by six S atoms to form a distorted octahedron. 相似文献
15.
The pentanuclear complex, Cu5(SIP)2(HSIP)2(H2O)18(H2O)5(H3SIP = 5-sulfoi-sophthalic acid), has been synthesized by the hydrothermal reaction of CuCl2 with NaH2SIP at 160 ℃, and characterized by single-crystal X-ray diffraction and IR spectrum.The crystal of the complex crystallizes in a triclinic system, space group P1-, with a = 7.0018(5), b = 11.9725(8), c = 19.0424(13) , α = 78.8540(10), β = 85.1710(10), γ = 83.6080(10)o, V = 1553.24(19) 3, Z = 1, C32H60O51S4Cu5, Mr = 1706.74, Dc = 1.825 g/cm3, μ = 1.937 mm-1, F(000) = 869, the final R = 0.0709 and wR = 0.1503 for 4235 observed reflections with I > 2σ(I).The five Cu2+ ions are connected by two symmetry-related tridentate SIP3-ligands and charge-balanced by two monodentate HSIP2-ligands, giving a discrete pentanuclear structure.The pentanuclear copper molecules are linked by hydrogen bonds to form a three-dimensional supramolecular structure.The temperature-dependent magnetic susceptibility data revealed weak ferromagnetic magnetic interactions between the Cu2+ ions. 相似文献
16.
4-(S)-[2-(N-甲基)吗啉基 ]-5-(R )-(l-薄荷烷氧基 )-丁内酯结构分析 总被引:1,自引:0,他引:1
N-甲基吗啉对5-(l-薄荷烷氧基)-2(5H)-呋喃酮的光催化不对称共轭加生成了4-(S)-[2-(N-甲基)吗啉基]-5-(R)-(l-薄荷烷氧基)-丁内酯,在四氢呋喃(THF)对比实验、参比物^13CNMR对照及不同溶剂^13CNMR测定的基础上,该新化合物的结构用高分辨率的子核磁共振谱、碳核磁共振谱、质谱、红外光谱及元素分析、旋光度等数据进行了确证。 相似文献
17.
TANG Ding-Xinga② ZHAO Yunb 《结构化学》2005,(3)
1 INTRODUCTION Multinuclear coordination compounds have attrac-ted much attention due to their distinctive optical, elec-tric and magnetic properties as well as enzyme ana-logue[1~4]. It is important for carboxylic acid to de-sign this compound[5~8]. EDTA is a useful titrant formetal determination because EDTA molecule is easyto coordinate with a metal atom (1:1). Other types ofEDTA-M compounds are seldom to know except Ln2-M3(EDTA)3(H2O)11?12H2O[5] and (UO2 )2EDTA[9]. … 相似文献
18.
邻甲基苯荒酸四乙基铵盐分别与硝酸银和氯化铜反应,经毗啶重结晶,得到四核银簇合物Ag_4(o-CH_3C_6H_4CS_2)_4(Py)_4(晶体Ⅰ)和二核铜化合物Cu_2(o-CH_3-C_6H_4CSS_2)_2(Py)_(晶体Ⅱ)。用X射线单晶衍射法测定了它们的晶体结构。晶体Ⅰ的空间群为P2/n。晶胞参数:a=14.757(4),b=12.231(3),c=15.183(4)A,β=91.14(2)°,V=2739.95A~3,Z=2。2590个衍射点参与修正,最终偏差因子R=0.087。晶体Ⅱ的空间群为C_1~1-P1。晶胞参数:a=9.307(7),b=9.546(7),c=10.119(8)A,α=95.06(9),β=109.74(10),γ=118.86(10)°,V=705.94A~3,Z=1。1198个衍射点参与修正,最终偏差因子R=0.086。 Ag_4(o-CH_3C_6H_4CS_2)_4(Py)_4分子中Ag_4呈蝴蝶状构型,其配位情况与四核银簇合物Ag_4(a-C_(10)H_7CS_2)_4(Py)_4相似。Cu_2(o-CH_3C_6H_4CSS_2)_2(Py)_2分子构型与Cu_2(a-C_(10)H_7CSS_2)_2(Py)_2十分相似。Cu—Cu键长为2.608A。而且邻甲基苯荒酸与Cu~(2+)反应包括一个氧化还原反应,也与a-萘荒酸与Cu~(2+)反应相似。可以认为邻甲基苯荒酸与a-萘荒酸有相似的空间效应和电子效应。 相似文献
19.
[Ho_2(phen)_4(H_2O)_4(OH)_2](phen)_2(NO_3)_4的合成、晶体结构及磁性 总被引:3,自引:0,他引:3
在甲醇与水的混合溶剂中,经浓硝酸硝化的Ho_2O_3与1,10-邻菲啰啉反应形 成氢氧根桥联的双核钬配合物[Ho_2(phen)_4(H_2O)_4(OH)_2] (phen)_2(NO_3)_4 (phen = 1,10-邻菲啰啉)。单晶X射线衍射晶体结构测定表明晶体属三斜晶系, P1-bar (no. 2)空间群,晶胞参数a = 1.1241(1) nm, b = 1.1439(1) nm, c = 1. 4058 (1) nm, α = 93.989(7)°, β = 98.173(7)°, γ = 108.19(1)°, V = 1.6874(4) nm~3, Z = 1, D_c = 1.737 g/cm~3, F(000) = 880,7752个独立衍射 点中,5702个可观测点满足F_o~2 ≥ 2σ (F_o~2),R_1 = 0.0499, wR_2 = 0. 858。标题配合物由中心对称的双核[Ho_2(phen)_4(H_2O)_4-(OH)_2]~(4+)配阳离 子,邻菲啰啉phen分子及硝酸根NO_3~-阴离子组成。敏个稀土原子与2个邻菲啰啉 配体,2相水分子和2个氢氧根配位形成配位数为8的[HoN_4O_4]四方反棱柱。配位 多面体通过两氢氧根基团形成共棱的[Ho_2N_8O_6]双四方反棱柱[d(Ho-N) = 0. 2549~0.2565 nm, d(Ho-O_(H_2O) = 0.2356, 0.2366 nm, d(Ho-O_(OH)) = 0. 2223, 0.2240 nm]。通过氢键和芳环堆积作用,配阳离子和邻菲啰啉分子排列形成 平行于(10 1-bar)的两维层结构,NO_3~-阴离子位于层之间。标题配合物为顺磁 物质,在5 ~300K区间内遵循Curie-Weiss定律X_m (T + 4.43) = 14.72 cm~3·K ·mol~(-1)(X_m为每摩尔Ho~(3+)离子磁化率),其Ho~(3+)离子的室温有效磁矩为 10.76 B. M.,与Ho~(3+)自由离子的磁矩基本相同,表明稀土离子间不存在磁交换 作用。 相似文献
20.
《结构化学》1992,(4)
<正> The title complex crystallizes in the triclinic system, space group P1, a =11. 912(4), b = 13. 626(2), c=10. 040(3)(?), a=95. 03(2) ,β= 114. 8 (3), γ = 73. 58(3)°, V = 1418.0(?)3, Z = 1, D,= 1. 37g/cm3, F(000) = 612, R = 0. 064 for 4860 independent reflections [I>3σ(I)]. Each Cu atom is coordinated by the oxygen atoms from the C10H7CH2COO groups and DMF in a square pyramid geometry. 相似文献