Homogenous Alloys of Formamidinium Lead Triiodide and Cesium Tin Triiodide for Efficient Ideal-Bandgap Perovskite Solar Cells

Yingxia Zong, Ning Wang, Lin Zhang, Ming Gang Ju, Xiao Cheng Zeng, Xiao Wei Sun, Yuanyuan Zhou, Nitin P. Padture

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The alloying behavior between FAPbI3 and CsSnI3 perovskites is studied carefully for the first time, which has led to the realization of single-phase hybrid perovskites of (FAPbI3)1−x(CsSnI3)x (0<x<1) compositions with anomalous bandgaps. (FAPbI3)1−x(CsSnI3)x perovskites exhibit stable, homogenous composition/microstructure at the nanoscale, as confirmed by microscopic characterization. The ideal bandgap of 1.3 eV for single-junction solar cell operation is achieved in the rationally-tailored (FAPbI3)0.7(CsSnI3)0.3-composition perovskite. Solar cells based on this new perovskite show power conversion efficiency up to 14.6 %.

Original languageEnglish (US)
Pages (from-to)12658-12662
Number of pages5
JournalAngewandte Chemie - International Edition
Volume56
Issue number41
DOIs
StatePublished - Jan 1 2017

Fingerprint

Cesium
Tin
Energy gap
Lead
Perovskite
Solar cells
Chemical analysis
Alloying
Conversion efficiency
Microstructure
Perovskite solar cells
formamidine
perovskite

Keywords

  • alloys
  • bandgaps
  • compositions
  • hybrid perovskites
  • solar cells
  • thin-film photovoltaics

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Cite this

Homogenous Alloys of Formamidinium Lead Triiodide and Cesium Tin Triiodide for Efficient Ideal-Bandgap Perovskite Solar Cells. / Zong, Yingxia; Wang, Ning; Zhang, Lin; Ju, Ming Gang; Zeng, Xiao Cheng; Sun, Xiao Wei; Zhou, Yuanyuan; Padture, Nitin P.

In: Angewandte Chemie - International Edition, Vol. 56, No. 41, 01.01.2017, p. 12658-12662.

Research output: Contribution to journalArticle

Zong, Yingxia ; Wang, Ning ; Zhang, Lin ; Ju, Ming Gang ; Zeng, Xiao Cheng ; Sun, Xiao Wei ; Zhou, Yuanyuan ; Padture, Nitin P. / Homogenous Alloys of Formamidinium Lead Triiodide and Cesium Tin Triiodide for Efficient Ideal-Bandgap Perovskite Solar Cells. In: Angewandte Chemie - International Edition. 2017 ; Vol. 56, No. 41. pp. 12658-12662.
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AU - Zeng, Xiao Cheng

AU - Sun, Xiao Wei

AU - Zhou, Yuanyuan

AU - Padture, Nitin P.

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