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DOI	10.1039/d0ee03487h
	Dynamic halide perovskite heterojunction generates direct current
	Ma C.; Kim B.; Kim S.-W.; Park N.-G.
发表日期	2021
ISSN	17545692
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
推荐引用方式 GB/T 7714	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).