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DOI10.1039/d0ee03487h
Dynamic halide perovskite heterojunction generates direct current
Ma C.; Kim B.; Kim S.-W.; Park N.-G.
发表日期2021
ISSN17545692
起始页码374
结束页码381
卷号14期号:1
英文摘要Here, we demonstrate a dynamic perovskite device capable of converting mechanical energy into direct current (DC) electrical energy, combining two concepts: carrier generation from the triboelectric effect and carrier separation through band energy level difference. By analyzing and comparing different perovskite (FAPbI3, MAPbI3, MAPbBr3, PEA2PbI4, etc.) and charge transport layer (CTL) materials (spiro-MeOTAD, PTAA, TiO2, SnO2, etc.), the key rules for determining DC output and performances are identified: (1) a suitable band alignment (band position and bandgap) between perovskite and CTL can separate the carrier transfer; (2) a large difference in work function between two layers leads to high electrical potential difference; and (3) a high carrier concentration can enhance the DC power-generating performances. Furthermore, it is found that the light illumination acts as a stimulus to current output to a large extent, which is due to the coupling effect from triboelectric and photovoltaic effects. This study provides a set of key rules to explain the mechanism and to further improve the performance of the dynamic perovskite/CTL heterojunction. © The Royal Society of Chemistry.
英文关键词Carrier transport; Dynamics; Heterojunctions; Perovskite; Photovoltaic effects; Titanium dioxide; Carrier generation; Carrier separation; Carrier transfer; Electrical energy; Electrical potential; Halide perovskites; Light illumination; Mechanical energies; Carrier concentration; comparative study; halide; mechanical property; performance assessment; perovskite
语种英语
来源期刊Energy & Environmental Science
文献类型期刊论文
条目标识符http://gcip.llas.ac.cn/handle/2XKMVOVA/190814
作者单位School of Chemical Engineering, Sungkyunkwan University, Suwon, 16419, South Korea; School of Advanced Materials Science and Engineering, Sungkyunkwan University, Suwon, 16419, South Korea
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Ma C.,Kim B.,Kim S.-W.,et al. Dynamic halide perovskite heterojunction generates direct current[J],2021,14(1).
APA Ma C.,Kim B.,Kim S.-W.,&Park N.-G..(2021).Dynamic halide perovskite heterojunction generates direct current.Energy & Environmental Science,14(1).
MLA Ma C.,et al."Dynamic halide perovskite heterojunction generates direct current".Energy & Environmental Science 14.1(2021).
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