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- Title
Strong bulk photovoltaic effect in engineered edge-embedded van der Waals structures.
- Authors
Liang, Zihan; Zhou, Xin; Zhang, Le; Yu, Xiang-Long; Lv, Yan; Song, Xuefen; Zhou, Yongheng; Wang, Han; Wang, Shuo; Wang, Taihong; Shum, Perry Ping; He, Qian; Liu, Yanjun; Zhu, Chao; Wang, Lin; Chen, Xiaolong
- Abstract
Bulk photovoltaic effect (BPVE), a second-order nonlinear optical effect governed by the quantum geometric properties of materials, offers a promising approach to overcome the Shockley-Quiesser limit of traditional photovoltaic effect and further improve the efficiency of energy harvesting. Here, we propose an effective platform, the nano edges embedded in assembled van der Waals (vdW) homo- or hetero-structures with strong symmetry breaking, low dimensionality and abundant species, for BPVE investigations. The BPVE-induced photocurrents strongly depend on the orientation of edge-embedded structures and polarization of incident light. Reversed photocurrent polarity can be observed at left and right edge-embedded structures. Our work not only visualizes the unique optoelectronic effect in vdW nano edges, but also provides an effective strategy for achieving BPVE in engineered vdW structures. The bulk photovoltaic effect (BPVE) is a nonlinear optical effect offering a promising approach to overcome the limitations of conventional photovoltaics. Here, the authors report the observation of BPVE-induced photocurrents at the edges of 2D semiconductors embedded in various van der Waals heterostructures.
- Subjects
PHOTOVOLTAIC effect; ENERGY harvesting; VAN der Waals forces; OPTICAL polarization; PHOTOCURRENTS; SYMMETRY breaking; ENERGY consumption
- Publication
Nature Communications, 2023, Vol 14, Issue 1, p1
- ISSN
2041-1723
- Publication type
Article
- DOI
10.1038/s41467-023-39995-0