Cold Antisolvent Bathing Derived Highly Efficient Large-Area Perovskite Solar Cells

Gyumin Jang, Hyeok Chan Kwon, Sunihl Ma, Seong Cheol Yun, Hyunha Yang, Jooho Moon

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4 Citations (Scopus)

Abstract

Scaling large-area solar cells is in high demand for the commercialization of perovskite solar cells (PSCs) with a high power-conversion efficiency (PCE). However, few roll-to-roll-compatible deposition methods for the formation of highly oriented uniform perovskite films are reported. Herein, a facile cold antisolvent bathing approach compatible with large-area fabrication is introduced. The wet precursor films are submerged in a cold antisolvent bath at 0 °C, and the retarded nucleation and growth kinetics allow highly oriented perovskite to be grown along the [110] and [220] directions, perpendicular to the substrate. The high degree of the preferred crystal orientation benefits the effective charge extraction and reduces the amount of inter- and intra-grain defects inside the perovskite films, improving the PCE from 16.48% (ambient-bathed solar cell) to 18.50% (cold-bathed counterpart). The cold antisolvent bathing method is employed for the fabrication of large-area (8 × 10 cm2) PSCs with uniform photovoltaic device parameters, thereby verifying the scale-up capability of the method.

Original languageEnglish
Article number1901719
JournalAdvanced Energy Materials
Volume9
Issue number36
DOIs
Publication statusPublished - 2019 Sep 1

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All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

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