Open AccessLight management in perovskite solar cells and organic LEDs with microlens arrays
Author(s) -
Akshit Peer,
Rana Biswas,
Joong-Mok Park,
Ruth Shinar,
J. Shinar
Publication year - 2017
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.25.010704
Subject(s) - microlens , materials science , optics , optoelectronics , absorption (acoustics) , oled , photocurrent , light emitting diode , substrate (aquarium) , layer (electronics) , lens (geology) , physics , nanotechnology , oceanography , geology
We demonstrate enhanced absorption in solar cells and enhanced light emission in OLEDs by light interaction with a periodically structured microlens array. We simulate n-i-p perovskite solar cells with a microlens at the air-glass interface, with rigorous scattering matrix simulations. The microlens focuses light in nanoscale regions within the absorber layer enhancing the solar cell. Optimal period of ~700 nm and microlens height of ~800-1000 nm, provides absorption (photocurrent) enhancement of 6% (6.3%). An external polymer microlens array on the air-glass side of the OLED generates experimental and theoretical enhancements >100%, by outcoupling trapped modes in the glass substrate.