articleAdvanced Energy MaterialsSep 14, 2017Closed access

Stabilizing the Efficiency Beyond 20% with a Mixed Cation Perovskite Solar Cell Fabricated in Ambient Air under Controlled Humidity

TSTrilok SinghTMTsutomu Miyasaka

Toin University of Yokohama

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Abstract

Abstract Perovskite solar cells have evolved to have compatible high efficiency and stability by employing mixed cation/halide type perovskite crystals as pinhole‐free large grain absorbers. The cesium (Cs)–formamidium–methylammonium triple cation‐based perovskite device fabricated in a glove box enables reproducible high‐voltage performance. This study explores the method to reproduce stable and high power conversion efficiency (PCE) of a triple cation perovskite prepared using a one‐step solution deposition and low‐temperature annealing fully conducted in controlled ambient humidity conditions. Optimizing the perovskite grain size by Cs concentration and solution processes, a route is created to obtain…

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Topics & keywords

Topics
Keywords
  • Materials science
  • Energy conversion efficiency
  • Perovskite (structure)
  • Perovskite solar cell
  • Grain size
  • Halide
  • Chemical engineering
  • Annealing (glass)
UN Sustainable Development Goals
  • Affordable and clean energy
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