Improved crystallinity of perovskite via molecularly tailored surface modification of SnO2

Detao Liu, Hualin Zheng, Long Ji, Hao Chen, Yafei Wang, Peng Zhang, Feng Wang, Jiang Wu, Zhi Chen, Shibin Li

Research output: Contribution to journalArticlepeer-review

22 Scopus citations

Abstract

The photovoltaic performance of perovskite solar cells (PSCs) largely depends on the crystal grain size of perovskite films. Here, we use the mixture of n-octyltrimethoxysilane (OTES) and aminopropyltrimethoxysilane (APTES) to tailor the surface termination state of SnO2 electron transport layer, and demonstrate the crystal grain size of perovskite is remarkably enlarged. The perovskite film with large crystal size shows a lower non-radical recombination density and a longer charge lifetime. The power conversion efficiency of PSCs is eventually improved from 18.21% to 20.3%. The proposed method may also impact other optoelectronic devices based perovskite films.

Original languageEnglish
Article number227161
JournalJournal of Power Sources
Volume441
DOIs
StatePublished - Nov 30 2019

Bibliographical note

Publisher Copyright:
© 2019 Elsevier B.V.

Keywords

  • Crystalline
  • Perovskite solar cells
  • SnO
  • Surface terminal
  • Trimethoxysilane

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering

Fingerprint

Dive into the research topics of 'Improved crystallinity of perovskite via molecularly tailored surface modification of SnO2'. Together they form a unique fingerprint.

Cite this