Ag modified bathocuproine:ZnO nanoparticles electron buffer layer based bifacial inverted-type perovskite solar cells

Ching Ju Chen, Anjali Chandel, Diksha Thakur, Jia Ren Wu, Shou En Chiang, Gui Sheng Zeng, Ji Lin Shen, Sheng Hui Chen, Sheng Hsiung Chang

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

An Ag modified bathocuproine:ZnO nanoparticles (BCP:ZnO NPs) thin film was used as the buffer layer of inverted-type perovskite solar cells, which increased the bifacial power conversion efficiency from 6.82% to 15.50%. The surface-enhanced Raman scattering and absorbance spectra show that the Ag modified BCP small molecules can effectively passivate the surface oxygen defects of ZnO NPs and thereby increasing the crystallinity, which simultaneously increases the short-circuit current density (JSC) and fill factor. It is noted that a high incident photon-to-electron conversion efficiency (IPCE) of 92% is achieved at the wavelength of 587 nm due to the constructive interference effect in the multilayer structure, which can be used to explain the high photocurrent generation in a semi-transparent solar cell. In addition, the light intensity-dependent experimental results of the bifacial perovskite solar demonstrates that the hole transportation is better than the electron transportation in the perovskite thin film. This concept can be readily used in the optimization of high-efficiency bifacial perovskite solar cells.

Original languageEnglish
Article number106110
JournalOrganic Electronics
Volume92
DOIs
StatePublished - May 2021

Keywords

  • Ag modified BCP:ZnO nanoparticles
  • Bifacial perovskite solar cells
  • Electron buffer layer
  • Light intensity-dependent photovoltaic behaviors

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