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Improvement in the performance of inverted planar perovskite solar cells via the CH3NH3PbI3-xClx:ZnO bulk heterojunction
Zhiyong Liu,
Tingwei He,
Huihui Wang,
Sagar Jain,
Kaikai Liu,
Jien Yang,
Na Zhang,
Hairui Liu,
Mingjian Yuan
Journal of Power Sources, Volume: 401, Pages: 303 - 311
Swansea University Author: Sagar Jain
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DOI (Published version): 10.1016/j.jpowsour.2018.09.007
Abstract
Zinc oxide (ZnO) as an electron transport material has been used in regular planar perovskite solar cells (PSCs). Herein, ZnO nanoparticles serve as an additive directly in perovskite active layer in order to fabricate a bulkheterojunction inverted planar PSC. The CH3NH3PbI3-xClx:ZnO bulk heterojunc...
| Published in: | Journal of Power Sources |
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| ISSN: | 0378-7753 |
| Published: |
Elsevier
2018
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa43751 |
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| Abstract: |
Zinc oxide (ZnO) as an electron transport material has been used in regular planar perovskite solar cells (PSCs). Herein, ZnO nanoparticles serve as an additive directly in perovskite active layer in order to fabricate a bulkheterojunction inverted planar PSC. The CH3NH3PbI3-xClx:ZnO bulk heterojunction is prepared by mixing ZnO nanoparticles into CH3NH3PbI3-xClx precursor solution. ZnOnanoparticles act as catalytic centers and induce the growth of perovskite grains leading to the formation of large-size perovskite crystals. Remarkably, hysterysisfree power conversion efficiency of 17.26% is achieved when precisely control the concentration of ZnO nanoparticles in CH3NH3PbIxCl3-x:ZnO bulk heterojunction active layer. The presence of ZnO nanoparticles in the perovskite films enhances the conductivity and electron mobility. Efficient charge injection of CH3NH3PbIxCl3x:ZnO film can improve charge extraction in the PSCs. Moreover, the PSCs with CH3NH3PbIxCl3-x:ZnO bulk heterojunction exhibit high fill factor of 77.3% and short current density of 22.71mAcm−2, which is attributed to improved perovskite quality. The bulk heterojunction structure is fabricated by combining perovskite and metal oxides, which is of great importance to the development and commercialization of PSCs in the future. |
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| Keywords: |
Perovskite solar cell, Zinc oxide, Bulk heterojunction Absorption, Electron mobility |
| College: |
Faculty of Science and Engineering |
| Start Page: |
303 |
| End Page: |
311 |