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Citation: CHEN Jun-Jun, SHI Cheng-Wu, ZHANG Zheng-Guo, XIAO Guan-Nan, SHAO Zhang-Peng, LI Nan-Nan. 4.81%-Efficiency Solid-State Quantum-Dot Sensitized Solar Cells Based on Compact PbS Quantum-Dot Thin Films and TiO₂ Nanorod Arrays[J]. Acta Physico-Chimica Sinica, ;2017, 33(10): 2029-2034. doi: 10.3866/PKU.WHXB201705121 shu

4.81%-Efficiency Solid-State Quantum-Dot Sensitized Solar Cells Based on Compact PbS Quantum-Dot Thin Films and TiO₂ Nanorod Arrays

School of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, P. R. China

Received Date: 20 February 2017
Revised Date: 24 April 2017

Fund Project: The project was supported by the National Natural Science Foundation of China (51272061, 51472071).

A compact PbS quantum-dot thin film was prepared using the combination of TiO₂ nanorod arrays and 1,2-ethanedithiol following the spin-coating assisted successive ionic layer absorption and reaction procedure. Solar cells with the novel structure of FTO/compact PbS quantum-dot thin film sensitized TiO₂ nanorod arrays/spiro-OMeTAD/Au were assembled. Subsequently, the influence of the length of TiO₂ nanorod arrays on the photovoltaic performance of all-solid-state compact PbS quantum-dot thin film sensitized solar cells was evaluated. The corresponding solar cells having TiO₂ nanorod array lengths of 290, 540, and 1040 nm achieved photoelectric conversion efficiencies (PCE) of 2.02%, 4.81%, and 1.95%, respectively. These results reveal that in order to achieve high PCE values with the all-solid-state quantum dot sensitized solar cells, it is very important to balance the hole diffusion length with the loading amount of quantum-dots.
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4.81%-Efficiency Solid-State Quantum-Dot Sensitized Solar Cells Based on Compact PbS Quantum-Dot Thin Films and TiO2 Nanorod Arrays

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通讯作者: 陈斌, bchen63@163.com

4.81%-Efficiency Solid-State Quantum-Dot Sensitized Solar Cells Based on Compact PbS Quantum-Dot Thin Films and TiO₂ Nanorod Arrays