articleACS Energy LettersDec 22, 2017HYBRID OA

Light-Induced Anion Phase Segregation in Mixed Halide Perovskites

MCMichael C. BrennanSDSergiu DragutaPVPrashant V. KamatMKMasaru Kuno

University of Notre Dame

Indexed incrossref

Abstract

Hybrid lead halide perovskites such as MAPbI3 (MA = CH3NH3+) and their mixed halide analogues represent an emerging class of materials for solar energy conversion. Intriguing aspects include sizable carrier diffusion lengths, large optical absorption coefficients, and certified power conversion efficiencies that now exceed 22%. Halide-composition-tunable band gaps also make MAPb(I1–xBrx)3 systems ideal candidates for tandem solar cells. Unfortunately, preventing the effective integration of MAPb(I1–xBrx)3 into working devices are intrinsic instabilities due to light-induced halide phase segregation. Namely, under illumination, mixed halide perovskites reversibly segregate into low-band-gap I-rich and…

Citation impact

616
total citations
FWCI
25.72
Percentile
100%
References
61
Citations per year

Authors

4

Topics & keywords

Topics
Keywords
  • Halide
  • Tandem
  • Band gap
  • Optoelectronics
  • Charge carrier
  • Materials science
  • Absorption (acoustics)
  • Photovoltaic system
UN Sustainable Development Goals
  • Affordable and clean energy
No related works found for this paper.

Funding