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Tunable Photocatalytic Properties of GaN‐Based Two‐Dimensional Heterostructures
Author(s) -
Wang GuangZhao,
Dang SuiHu,
Zhao WenXi,
Li YaDong,
Xiao ShuYuan,
Zhong MingMin
Publication year - 2018
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201800133
Subject(s) - heterojunction , photocatalysis , materials science , optoelectronics , visible spectrum , enhanced data rates for gsm evolution , wide bandgap semiconductor , electrolyte , band gap , chemistry , electrode , computer science , catalysis , telecommunications , biochemistry
We have modulated the photocatalytic properties of GaN‐based two‐dimensional (2D) heterostructures including GaN/MoSe 2 and GaN/WS 2 (WSe 2 ) by adjusting biaxial strain and the pH of electrolyte. The structural, energetic, and electronic properties of these GaN‐based heterostructures are investigated through hybrid density functional calculations so as to give the varied bandgaps and band edge positions. When the pH values are respectively within the scope of 7.2–7.9, 5.6–8 (9.2–10.6), and 11.2–12.4 (12.7–13), the suitable bandgaps and band edges make GaN/MoSe 2 , GaN/WS 2 , and GaN/WSe 2 heterostructures sensitive to visible light and thermodynamically feasible for overall water redox processes. These results give a potential scheme for GaN‐based visible light photocatalysts.