Modulation of light absorption by optical spacer in perovskite solar cells

Lead halide perovskite solar cells with planar heterojunction configuration have recently attracted tremendous attention because of their excellent power conversion efficiencies. The modulation of optical absorption by using an optical spacer layer is a unique method to enhance the device efficiency...

Full description

Saved in:
Bibliographic Details
Published in:Physica status solidi. PSS-RRL. Rapid research letters 2016-08, Vol.10 (8), p.592-595
Main Authors: Kim, Kangmin, Jung, Buyoung, Kumar, Neetesh, Eom, Yoomin, Kim, Woochul
Format: Article
Language:English
Subjects:
Devices
electric fields
electron transport
Energy conversion efficiency
hole transport
Lead
Modulation
optical spacers
perovskite solar cells
Perovskites
Photovoltaic cells
Simulation
Solar cells
Spacers
Zinc oxide
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Lead halide perovskite solar cells with planar heterojunction configuration have recently attracted tremendous attention because of their excellent power conversion efficiencies. The modulation of optical absorption by using an optical spacer layer is a unique method to enhance the device efficiency. Here, we demonstrate the application of thin ZnO layer that act as an optical spacer that enhance the power conversion efficiency perovskite devices from 8.92% to 10.7%, which is mainly due to increment in short‐circuit current density by 16% compared to the reference solar cell. The simulation data revealed that ZnO acts as an optical spacer layer that shifts length (average) of electric field |E|2 distribution from 500 nm to 750 nm wavelength is 25 nm in the perovskite layer. Which represents that exciton generation region is moved to near the hole transport layer that enhances the exciton dissociation efficiency and device efficiency. The modulation of optical absorption by using an optical spacer layer is a unique method to enhance the efficiency of perovskite solar cells. The authors demonstrate the application of a thin ZnO layer that acts as an optical spacer enhancing the power conversion efficiency of perovskite devices from 8.92% to 10.7%, which is mainly due to the increment in short‐circuit current density by 16% compared to the reference solar cell.
ISSN:1862-6254
1862-6270
DOI:10.1002/pssr.201600037