Efficient light management in narrow-bandgap perovskite solar cells

Salman Manzoor, Zhengshan J. Yu, Zhibin Yang, Jinsong Huang, Zachary C. Holman

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


Perovskite solar cells have made unprecedented efficiency improvements for bandgaps wider than 1.5 eV, but narrow-bandgap perovskites still have low efficiency in single-junction and tandem cells. A significant challenge is the front-surface reflectance inherited from the superstrate device fabrication. In this work, we applied a polydimethylsiloxane (PDMS) light scattering layer to a 1.22-eV-bandgap perovskite cell and demonstrated 2.6 mA/cm2 increase in short-circuit current density. We further performed optical simulations that confirm the effectiveness of reducing reflection with the PDMS layer, and we show that the parasitic absorption in the front transparent conductive oxide and contact layers are responsible for the other optical losses.

Original languageEnglish (US)
Title of host publication2019 IEEE 46th Photovoltaic Specialists Conference, PVSC 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Number of pages3
ISBN (Electronic)9781728104942
StatePublished - Jun 2019
Event46th IEEE Photovoltaic Specialists Conference, PVSC 2019 - Chicago, United States
Duration: Jun 16 2019Jun 21 2019

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371


Conference46th IEEE Photovoltaic Specialists Conference, PVSC 2019
Country/TerritoryUnited States


  • antireflection coating
  • optical modeling
  • perovskite
  • ray tracing

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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