Accurate analysis of electron transfer from quantum dots to metal oxides in quantum dot sensitized solar cells |
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Affiliation: | 1. School of Electrical and Computer Engineering, Tarbiat Modares University (TMU), P.O. Box 14115-194, Tehran, Iran;2. Department of Physics, University of Shahrood, Shahrood, Iran;1. Alexandria University, New Advanced Materials & Nanotechnology Centre, Faculty of Engineering, Textile & Material Department, 21544 Alexandria, Egypt;2. Laboratory of Nanosciences Research (LNR), E.A. no.4682, UFR Sciences, Department of Physics, University of Reims Champagne Ardenne, 21 rue Clément Ader, 51685 cedex 02, France;3. University of Mohammed V- Agdal, Materials Physics Laboratory, P.B. 1014, Rabat, Morocco;4. Physics and Astronomy Department, College of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia;5. Research chair of Exploitation of Renewable Energy Applications in Saudi Arabia, Physics & Astronomy Dept., College of Science, King Saud University, P.0.Box 2455, Riyadh 11451, Saudi Arabi;6. Physics Department, Faculty of Science, Ain Shams University, Abassia, Cairo 11566, Egypt;7. Faculty of Electrical Engineering, Czestochowa University of Technology, Armii Krajowej 17, Czestochowa, Poland;1. Department of Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China;2. Hubei Key Laboratory for Engineering Structural Analysis and Safety Assessment, Wuhan 430074, China;1. Department of Physics, Banaras Hindu University, Varanasi 221005, U.P., India;1. School of Physics, University of Hyderabad, Hyderabad 500046, India;2. Department of Physics, Visvabharathi University, Shantinekatan, Birbhum, India |
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Abstract: | Electron transfer rate from quantum dot (QD) to metal oxide (MO) in quantum dot sensitized solar cells (QDSSCs) has an important role in the efficiency. In this work, we analyse the electron transfer rate from CdSe, CdS and CdTe QDs to TiO2, ZnO and SnO2 MOs by extending the related equations with considering various effects, based on the Marcus theory. In this regard, the effects of QD diameter, QD–MO spacing, the crystalline defects, temperature, and the reorganizational energy, on the electron transfer rate are investigated. The results show that, the maximum electron transfer rate is achieved for CdTe QD with the mentioned three MOs. Moreover, in order to direct the designer to reach the appropriate QDs–MOs combinations for obtaining the maximum electron transfer rate, the average electron transfer rate for various combinations is calculated. For the verification of simulation method, a part of work has been compared with the previous experimental and theoretical results, which indicates the correctness of our simulation algorithm. |
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Keywords: | Quantum dot sensitized solar cells Electron transfer Quantum dot Metal oxide |
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