Selective Dissolution of Halide Perovskites as a Step Towards Recycling Solar Cells

Donghoe Kim, Kai Zhu, Byeong Kim, Seung Kwon, So Park, Zhen Li, Hyun Jung

Research output: Contribution to journalArticlepeer-review

147 Scopus Citations

Abstract

Most research on perovskite solar cells has focused on improving power-conversion efficiency and stability. However, if one could refurbish perovskite solar cells, their stability might not be a critical issue. From the perspective of cost effectiveness, if failed, perovskite solar cells could be collected and recycled; reuse of their gold electrodes and transparent conducting glasses could reduce the price per watt of perovskite photovoltaic modules. Herein, we present a simple and effective method for removing the perovskite layer and reusing the mesoporous TiO2 -coated transparent conducting glass substrate via selective dissolution. We find that the perovskite layer can be easily decomposed in polar aprotic solvents because of the reaction between polar aprotic solvents and Pb 2+ cations. After 10 cycles of recycling, a mesoporous TiO2 -coated transparent conducting glass substrate-based perovskite solar cell still shows a constant power-conversion efficiency, thereby demonstrating the possibility of recycling perovskite solar cells.

Original languageAmerican English
Article number11735
Number of pages9
JournalNature Communications
Volume7
DOIs
StatePublished - 23 May 2016

NREL Publication Number

  • NREL/JA-5900-66604

Keywords

  • perovskite solar cells
  • selective dissolution

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