Cryo-controlled Nucleation Method for High-efficiency Perovskite Solar Cells

Annie Ng, Zhiwei Ren, Qian Shen, Sin Hang Cheung, Aleksandra B. Djurišic, Shu Kong Su, Gang Li, Charles Surya

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A novel cryo-controlled nucleation technique is applied to synthesize organometal halide perovskite for solar cells (PSCs). A rapid reduction in the temperature causes a supersaturation condition in the precursor layer, prepared by solution technique, leading to a uniform nucleation sites for the subsequent crystallization phase. The low temperature condition inhibits the pre-mature crystallization of perovskites in the early stage before a uniform seed layer is formed and, thereby, decoupling the nucleation and crystallization phases. This approach allows the formation of a highly uniform nucleation layer and is crucial for the growth of perovskite films with excellent film quality. A power conversion efficiency (PCE) of 21.4 % for the champion PSC was achieved by using this perovskite growth method.

Original languageEnglish
Title of host publication2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages503-507
Number of pages5
ISBN (Electronic)9781538685297
DOIs
Publication statusPublished - Nov 26 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: Jun 10 2018Jun 15 2018

Publication series

Name2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC

Conference

Conference7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
CountryUnited States
CityWaikoloa Village
Period6/10/186/15/18

Keywords

  • crystallization
  • defects
  • film quality
  • nucleation
  • perovskite solar cells

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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