Enhancing the performance of perovskite solar cells by hybridizing quantum dots with CH3NH3PbI3
Hong Lin a, Jianhua Han a
a State Key Laboratory of New Ceramics & Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China.
Asia-Pacific International Conference on Perovskite, Organic Photovoltaics and Optoelectronics
Proceedings of International Conference on Perovskite and Organic Photovoltaics and Optoelectronics (IPEROP19)
Kyōto-shi, Japan, 2019 January 27th - 29th
Organizers: Hideo Ohkita, Atsushi Wakamiya and Mohammad Nazeeruddin
Poster, Hong Lin, 107
Publication date: 23rd October 2018

Combining perovskite solar cells (PSCs) with quantum dots solar cells (QDSCs) would achieve a promising potential considering both PSCs’ and QDSCs’ excellent photovoltaic properties. In this study, quantum Dots (QDs)/CH3NH3PbI3 hybrid materials applied as absorber layer in PSCs was synthesized by a low-cost, facile, and simple solvent method. The hybrid materials were fabricated successfully for embedding QDs in perovskite layer. Compared with PSCs based on pure CH3NH3PbI3, cells using QDs/CH3NH3PbI3 hybrid materials as absorber achieved an obviously increase in power conversion efficiency (PCE). The performance improvement can be attributed to the optimized crystallinity and increased photoinduced electron transfer rates. This hybridizing technique is easy to control for fabricating uniform QDs/CH3NH3PbI3 hybrid films with different ratios of QDs to CH3NH3PbI3 in PSCs. Such a novel and simple hybridizing technique of MAPbI3-QDs opens up a new promising method to improve the performance of PSCs, and has strong potential to be applied to prepare other hybrid composite materials.

This work was supported by the Projects of International Cooperation and exchanges NSFC (51561145007), the National Natural Science Foundation of China (51772166), and Sino-Italy International Cooperation on Innovation (2016YFE0104000)

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