Band Alignment Boosts Charge-Carrier Collection in Sn-based Perovskite over Pb Counterparts

doi:10.1021/acs.jpclett.9b01405

SIC OpenIR

	Band Alignment Boosts Charge-Carrier Collection in Sn-based Perovskite over Pb Counterparts
	Li, Binghan; Long, Ruiying; Yao, Qishun; Zhu, Zihao; Mi, Qixi
	2019-07-04
Source Publication	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
ISSN	1948-7185
Volume	10 Issue:13 Pages:3699
Subtype	Article
Abstract	The diverse elemental compositions endow metal halide perovskites with tailorable electronic structures and broad optoelectronic applications. For Sn-based perovskites, their bandedge positions, which govern interfacial charge-carrier transport, are less well studied than their Pb counterparts. In this work, the valence band maximum (VBM) of CsSnBr3 was experimentally and theoretically determined to be -5.2 eV, to which Au forms a good contact. The conduction band minimum (CBM) of CsSnBr3 at 3.4 eV is matched by 1,3,5-tris(4-phenylquinolin-2-yl)benzene (TQB), an organic electron transport material and a ligand to Sn(II). Thanks to proper band alignment, the device structure Al/TQB/CsSnBr3/Au constitutes a photodetector responsive to the entire visible spectrum without a bias voltage and outperforms Pb-based devices under similar conditions. Our results highlight the advantage of combined experimental and theoretical tools in understanding intrinsic material properties and guiding device fabrication.
DOI	10.1021/acs.jpclett.9b01405
Language	英语
WOS Research Area	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
Publisher	AMER CHEMICAL SOC
Citation statistics	Cited Times:2[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/26990
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Li, Binghan,Long, Ruiying,Yao, Qishun,et al. Band Alignment Boosts Charge-Carrier Collection in Sn-based Perovskite over Pb Counterparts[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2019,10(13):3699.
APA	Li, Binghan,Long, Ruiying,Yao, Qishun,Zhu, Zihao,&Mi, Qixi.(2019).Band Alignment Boosts Charge-Carrier Collection in Sn-based Perovskite over Pb Counterparts.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,10(13),3699.
MLA	Li, Binghan,et al."Band Alignment Boosts Charge-Carrier Collection in Sn-based Perovskite over Pb Counterparts".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 10.13(2019):3699.

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