Giant intrinsic photovoltaic effect in one-dimensional van der Waals grain boundaries

Zhou，Yongheng1; Zhou，Xin2,3; Yu，Xiang Long4,5; Liang，Zihan1; Zhao，Xiaoxu3; Wang，Taihong1; Miao，Jinshui6; Chen，Xiaolong1

2024-12-01

10.1038/s41467-024-44792-4

Nature Communications   影响因子和分区

2041-1723

The photovoltaic effect lies at the heart of eco-friendly energy harvesting. However, the conversion efficiency of traditional photovoltaic effect utilizing the built-in electric effect in p-n junctions is restricted by the Shockley-Queisser limit. Alternatively, intrinsic/bulk photovoltaic effect (IPVE/BPVE), a second-order nonlinear optoelectronic effect arising from the broken inversion symmetry of crystalline structure, can overcome this theoretical limit. Here, we uncover giant and robust IPVE in one-dimensional (1D) van der Waals (vdW) grain boundaries (GBs) in a layered semiconductor, ReS. The IPVE-induced photocurrent densities in vdW GBs are among the highest reported values compared with all kinds of material platforms. Furthermore, the IPVE-induced photocurrent is gate-tunable with a polarization-independent component along the GBs, which is preferred for energy harvesting. The observed IPVE in vdW GBs demonstrates a promising mechanism for emerging optoelectronics applications.

SCI

英语

第一 ; 通讯

2-s2.0-85182196629

Scopus

1.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue,518055,China
2.Department of Materials Science and Engineering,National University of Singapore,Singapore,117575,Singapore
3.School of Materials Science and Engineering,Peking University,Beijing,100871,China
4.Shenzhen Institute for Quantum Science and Engineering,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Avenue,518055,China
5.International Quantum Academy,Shenzhen,518048,China
6.State Key Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,Shanghai,200083,China

Zhou，Yongheng,Zhou，Xin,Yu，Xiang Long,et al. Giant intrinsic photovoltaic effect in one-dimensional van der Waals grain boundaries[J]. Nature Communications,2024,15(1).

Zhou，Yongheng.,Zhou，Xin.,Yu，Xiang Long.,Liang，Zihan.,Zhao，Xiaoxu.,...&Chen，Xiaolong.(2024).Giant intrinsic photovoltaic effect in one-dimensional van der Waals grain boundaries.Nature Communications,15(1).

Zhou，Yongheng,et al."Giant intrinsic photovoltaic effect in one-dimensional van der Waals grain boundaries".Nature Communications 15.1(2024).