Characterization of low-frequency excess noise in perovskite-based photovoltaic cells

Shen Qian, Annie Ng, Zhiwei Ren, Charles Surya

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

We present experimental results on low-frequency noise characterizations of high-efficiency perovskite solar cells (PSCs). It is shown that annealing the device in dry oxygen results in significant enhancement in the power conversion efficiency of the device. Systematic investigations on the photothermal deflection spectroscopy and the low-frequency excess noise of the devices a indicate that oxygen annealing of the device resulted in the passivation of traps located at the grain boundaries of the perovskite films as well as the perovskite-spiro-MeOTAD interface.

Original languageEnglish
Title of host publication2015 International Conference on Noise and Fluctuations, ICNF 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781467383356
DOIs
Publication statusPublished - 2 Oct 2015
EventInternational Conference on Noise and Fluctuations, ICNF 2015 - Xian, China
Duration: 2 Jun 20156 Jun 2015

Publication series

Name2015 International Conference on Noise and Fluctuations, ICNF 2015

Conference

ConferenceInternational Conference on Noise and Fluctuations, ICNF 2015
Country/TerritoryChina
CityXian
Period2/06/156/06/15

Keywords

  • low-frequency noise
  • oxygen annealing
  • perovskite solar cells

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Acoustics and Ultrasonics

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