An internally photoemitted hot carrier solar cell based on organic-inorganic perovskite. (February 2020)

• Record Type: Journal Article
• Authors: Wang, Gang; Liao, Li Ping; Elseman, Ahmed Mourtada; Yao, Yan Qing; Lin, Chun Yan; Hu, Wei; Liu, De Bei; Xu, Cun Yun; Zhou, Guang Dong; Li, Ping; Chen, Li Jia; Han, Juan Juan; De Yang, Xiu; Wu, Rong; Rao, Xi; Song, Qun Liang
• Is Part Of: Nano energy. Volume 68(2020)
• Publication Date: 2020-02
• Subjects: Hot carrier collection -- Steady state illumination -- Perovskite; Nanoscience -- Periodicals; Nanotechnology -- Periodicals; Nanostructured materials -- Periodicals; Power resources -- Technological innovations -- Periodicals; Nanoscience; Nanostructured materials; Nanotechnology; Power resources -- Technological innovations; Periodicals; 621.042
• DOI: 10.1016/j.nanoen.2019.104383
• Languages: English
• ISSNs: 2211-2855

Abstract

Abstract: Hot carriers and their extraction have been demonstrated in organic-inorganic perovskites under transient condition. Unfortunately, there was no real device to harvest hot carriers under steady-state illumination yet due to the indistinguishable hot and cooled carriers in conventional sandwiched structure. Here we report a new designed architecture based on internally photoemitted hot carrier (IPHC) solar cell, whose active CH3 NH3 PbI3 layer is outside of the two collection electrodes with configuration of CH3 NH3 PbI3 /Au/TiO2 /FTO. Herein, the photoexcited hot electrons transfer ballistically from CH3 NH3 PbI3 layer to TiO2 via thin gold layer for electron collection. For the first time, the device we fabricated using this novel structure produces short circuit current of 5422 μA cm −2 under one sun (100 mW cm −2 ) illumination which demonstrates the efficient harvesting of hot electrons under steady-state sunlight illumination. The considerable efficient photocurrent showed by this new design opens an alternative approach for light-to-electricity conversion. Graphical abstract: Image 1 Highlights: A newly structure of perovskite solar cell. Hot electrons collection under steady state illumination. The current of 5422 μA cm −2 harvesting for hot electrons under one sun (100 mW cm −2 ) illumination.