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Plasmonic Local Heating Induced Strain Modulation for Enhanced Efficiency and Stability of Perovskite Solar Cells

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

Abstract

The residual strain induced during the growth of perovskite film is an intrinsic issue that significantly affects the efficiency and stability of perovskite solar cells (PVSCs). Inspired by the flipped annealing method to release strain in perovskite thin films, SiO2-coated gold nanorods (GNR@SiO2) are introduced into perovskite film and advantage of the plasmonic local heating effect is taken for in situ strain relaxation. The GNR@SiO2-incorporated inverted PVSCs exhibit a champion power conversion efficiency (PCE) over 23%, which is the highest PCE in plasmonic-incorporated PVSCs. Moreover, the intrinsic stability of the resulting PVSCs is greatly improved for the nonencapsulated device and retains 84% of its initial PCE after 2800 h aging under continuous illumination at 65 ± 5 °C in an N2 glove box and nearly 90% after 1000 h repetitive 12 h light on–off cycles. This work provides an efficient yet easy-to-implement plasmonic heating strategy for simultaneously enhancing the efficiency and stability of PVSCs.
Original languageEnglish
Article number2200186
JournalAdvanced Energy Materials
Volume12
Issue number19
Online published7 Apr 2022
DOIs
Publication statusPublished - 19 May 2022

Funding

A.K.Y.J. thanks the sponsorship of the Lee Shau-Kee Chair Professor (Materials Science), and the support from the APRC Grant of the City University of Hong Kong (9380086), Innovation and Technology Fund (ITS/497/18FP, GHP/021/18SZ), the GRF grant (11307621) from the Research Grants Council of Hong Kong, Guangdong Major Project of Basic and Applied Basic Research (2019B030302007), Guangdong-Hong Kong-Macao Joint Laboratory of Optoelectronic and Magnetic Functional Materials (2019B121205002). D.Y.L. acknowledges the financial support by the Research Grants Council of Hong Kong (CRF Grant No. C5037-18G) and the APRC Grant of the City University of Hong Kong (9610434). The authors acknowledge the help from Dr. Qi Liu and Dr. Jian Zhang on GIXRD measurements and the useful discussions with Dr. Xiaoyan Zhong and Dr. Ningbin Zhang on TEM characterizations.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

Research Keywords

  • gold nanorods
  • perovskite solar cells
  • plasmonic local heating
  • stability
  • strain relaxation

RGC Funding Information

  • RGC-funded

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