BROWSE

Related Researcher

Author's Photo

Lee, Geunsik
Electronic Structure and Transport in Condensed Materials
Research Interests
  • open quantum system, non-equilibrium electron transport

ITEM VIEW & DOWNLOAD

La-doped BaSnO3 electron transport layer for perovskite solar cells

Cited 0 times inthomson ciCited 0 times inthomson ci
Title
La-doped BaSnO3 electron transport layer for perovskite solar cells
Author
Myung, Chang WooLee, GeunsikKim, Kwang S.
Issue Date
2018-12
Publisher
ROYAL SOC CHEMISTRY
Citation
JOURNAL OF MATERIALS CHEMISTRY A, v.6, no.45, pp.23071 - 23077
Abstract
Due to the photoinstability and large hysteresis of the TiO2 electron transport layer (ETL) in perovskite solar cells (PSCs), the search for novel electron transport materials has emerged. Herein, using first principles calculations, we unveiled the key factor for the ideal band alignment between La-doped BaSnO3 (LBSO) and methyl ammonium (MA) lead iodide perovskite (MAPbI3). The (PbI2-, MAI-terminated)CH3NH3PbI3/(SnO2-, BaO-terminated)LaxBa(1−x)SnO3 interface formed a stable “all-perovskite” heterostructure with large binding energy. The selective band alignment of the conduction band was easily manipulated by La-doping on the Ba site due to the band gap renormalization (or shrinkage) caused by doped electrons and La3+ dopant. In addition, the MAI-terminated MAPbI3/LBSO interface exhibited proton transfer (BaO-terminated) and strong hydrogen bonding (SnO2-terminated) between MA and oxygen anion. LBSO presenting high mobility, photostability, and structural stability would help develop the next generation ETL materials for PSCs.
URI
https://scholarworks.unist.ac.kr/handle/201301/25180
URL
https://pubs.rsc.org/en/content/articlelanding/2018/ta/c8ta08764d#!divAbstract
DOI
10.1039/C8TA08764D
ISSN
2050-7488
Appears in Collections:
SNS_Journal Papers
Files in This Item:
There are no files associated with this item.

find_unist can give you direct access to the published full text of this article. (UNISTARs only)

Show full item record

qrcode

  • mendeley

    citeulike

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

MENU