Efficient and Stable Thin-Film Luminescent Solar Concentrators Enabled by Near-Infrared Emission Perovskite Nanocrystals

Jiajing Wu, Jianyu Tong, Yuan Gao, Aifei Wang, Tao Zhang, Hairen Tan, Shuming Nie, Zhengtao Deng

Research output: Contribution to journalArticlepeer-review

Abstract

A novel triphenylphosphine (TPP) treatment strategy was developed to prepare the near-infrared emission CsPbI3 nanocrystal (NC)-polymer composite thin-film luminescent solar concentrators (LSCs) featuring high absolute photoluminescence quantum yield (PLQY), low reabsorption, and high stability. The PL emission of the LSCs is centered at about 700 nm with 99.4±0.4 % PLQY and narrow full width at half maximum (FWHM) of 75 meV (30 nm). Compared with LSCs prepared with classic CsPbI3 NCs, the stability of the LSCs after TPP treatments has been greatly improved, even after long-term (30 days) immersion in water and strong mercury-lamp irradiation (50 mW cm−2). Owing to the presence of lone-pair electrons on the phosphorus atom, TPP is also used as a photoinitiator, with higher efficiency than other common photoinitiators. Large-area (ca. 75 cm2) infrared LSCs were achieved with a high optical conversion efficiency of 3.1 % at a geometric factor of 10.

Original languageEnglish (US)
Pages (from-to)7738-7742
Number of pages5
JournalAngewandte Chemie - International Edition
Volume59
Issue number20
DOIs
StatePublished - May 11 2020

Keywords

  • lead halides
  • luminescent solar concentrators
  • nanocrystals
  • perovskites
  • polymer composites

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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