Mechanism for Enhancing Photocurrent of Hot Electron Collection Solar Cells by Adding LiF on the Outmost MAPbI3 Perovskite Layer
| Autor: | Gang Wang, Guang Dong Zhou, Qunliang Song, Lian Bin Niu, Ping Li, Yan Qing Yao, Li Ping Liao, Cunyun Xu |
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| Rok vydání: | 2021 |
| Předmět: |
Photocurrent
Materials science business.industry Lithium fluoride 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Electronic Optical and Magnetic Materials law.invention chemistry.chemical_compound Semiconductor chemistry law Solar cell Surface modification Optoelectronics Electrical and Electronic Engineering 0210 nano-technology business Current density Layer (electronics) Perovskite (structure) |
| Zdroj: | IEEE Journal of Photovoltaics. 11:99-103 |
| ISSN: | 2156-3403 2156-3381 |
| Popis: | Organic-inorganic hybrid perovskite has been verified as a suitable semiconductor for hot carrier solar cells via transient absorption spectroscopy. Recently, an internally photoemitted hot carrier (IPHC) solar cell with a novel and innovative structure based on organic-inorganic hybrid perovskite has been achieved. This is a breakthrough in hot carrier study based on perovskite material. To further improve the performance of this newly developed hot electron collection device, a simple and efficient method of adding lithium fluoride (LiF) surface modification layer was applied onto the outmost perovskite layer that benefits both reduction of the trap states and formation of interface dipoles. The IPHC device with LiF modification layer shows a remarkable increase of the short-circuit current density with 20.31% increment. This successful interface engineering proposes a new guideline for further optimizing the performance IPHC and also traditional solar cells based on perovskite. |
| Databáze: | OpenAIRE |
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