Selection of contact materials to p-type halide perovskite by electronegativity matching

doi:10.1063/5.0008406

SIC OpenIR

	Selection of contact materials to p-type halide perovskite by electronegativity matching
	Long, RY; Li, BH; Mi, QX
	2020-06-01
Source Publication	AIP ADVANCES
Issue	6
Subtype	Article
Abstract	The performance of perovskite optoelectronic devices depends critically on the contact between the active layer and charge transport materials. To reveal the mechanism of barrier formation on perovskite surfaces, we studied Schottky junctions between various metals and a p-type perovskite CsSnBr3. By constructing slab models of the junction interface and aligning atomic core levels, the contacts between Au/CsSnBr3 and graphite/CsSnBr3 were found to be ohmic, but various other metals produced Schottky junctions with CsSnBr3. These calculation results, supported by x-ray photoelectron spectroscopy measurements, suggest that the barrier height of a metal/CsSnBr3 junction is a linear function of the metal's electronegativity, rather than its work function. By introducing the concept of effective electronegativity for compounds, this trend was extended to a general rule that a suitable transport material should have an effective electronegativity to match that of the perovskite. (c) 2020 Author(s). All article content, except where otherwise noted, is licensed under a Creative Commons Attribution (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
DOI	10.1063/5.0008406
WOS Keyword	ELECTRONIC-PROPERTIES ; INTERFACE ; EFFICIENCY ; STATES
Language	英语
WOS Research Area	Science & Technology - Other Topics ; Materials Science ; Physics
Publisher	AMER INST PHYSICS
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/28009
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Long, RY,Li, BH,Mi, QX. Selection of contact materials to p-type halide perovskite by electronegativity matching[J]. AIP ADVANCES,2020(6).
APA	Long, RY,Li, BH,&Mi, QX.(2020).Selection of contact materials to p-type halide perovskite by electronegativity matching.AIP ADVANCES(6).
MLA	Long, RY,et al."Selection of contact materials to p-type halide perovskite by electronegativity matching".AIP ADVANCES .6(2020).

Files in This Item:
There are no files associated with this item.

If you have any objections to this item, please fill out the form below and the administrator will contact you as soon as possible.
Content:
Email：	*
Institution:
Verification Code:	Refresh

Any comments and suggestions are welcomed.
Title:	*
Content:
Email：	*
Verification Code:	Refresh

中国科学院上海硅酸盐研究所机构知识库