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Slowing Hot-Electron Relaxation in Mix-Phase Nanowires for Hot-Carrier Photovoltaics

Wang, Hailu; Fang, Wang; Xu, Tengfei; Xia, Hui; Xie, Runzhang; Zhou, Xiaohao; Ge, Xun; Liu, Weiwei; Zhu, Yicheng; Sun, Liaoxin; Fu, Lan

Description

Hot carrier harvest could save 30% energy loss in solar cells. So far, however, it is still unreachable as the photoexcited hot carriers are short-lived, ∼1 ps, determined by a rapid relaxation process, thus invalidating any reprocessing efforts. Here, we propose and demonstrate a feasible route to reserve hot electrons for efficient collection. It is accomplished by an intentional mix of cubic zinc-blend and hexagonal wurtzite phases in III-V semiconductor nanowires. Additional energy levels...[Show more]

CollectionsANU Research Publications
Date published: 2021
Type: Journal article
URI: http://hdl.handle.net/1885/289917
Source: Nano Letters
DOI: 10.1021/acs.nanolett.1c02725

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