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Cyanine Lead Iodine Low-Dimensional Perovskite with ∼1000 nm Photoelectronic Response

  • Xiaodong Li*
  • , Yuyang Hu
  • , Xuemin Guo
  • , Chunyan Lu
  • , Haobo Yuan
  • , Wen Li
  • , Zhengbo Cui
  • , Yingguo Yang
  • , Wenxiao Zhang
  • , Junfeng Fang*
  • *Corresponding author for this work
  • East China Normal University
  • Fudan University

Research output: Contribution to journalArticlepeer-review

Abstract

We report a cyanine dye (815EI)-incorporated perovskite, where the iodide salt nature of 815EI helps to interact with PbI2 to form a low-dimensional perovskite, and the perovskite structure promotes 815EI molecule arrangement and crystallization, benefiting charge dissociation and transport. Resulting perovskite solar cells (PSCs) exhibit a broadened photoelectronic response to ∼1000 nm with obvious external quantum efficiency (EQE) of >15% at 920 nm. In addition, resulting PSCs exhibit excellent stability, retaining over 90% of initial efficiency after 85 °C aging for 2300 h. Our work provides a new approach to broaden the photoelectronic response of low-dimensional perovskite materials.

Original languageEnglish
Pages (from-to)4650-4654
Number of pages5
JournalACS Applied Energy Materials
Volume7
Issue number11
DOIs
StatePublished - 10 Jun 2024
Externally publishedYes

Keywords

  • Cyanine dye
  • Low-dimensional perovskite
  • Near-infrared
  • Photoelectronic response
  • Stability

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