Simulation of enhanced light extraction from periodic, disordered, and quasi-periodic OLED structures
Abstract
We have developed a rigorous scattering matrix theory of light emission from periodically structured media using a Green’s function approach. We computationally simulate the spectral power inside the structure, incorporating Purcell factor enhancements, and find internal waveguiding modes and plasmonic losses. We simulate the light-outcoupling factor and describe how corrugations and structured media can enhance . We have extended our framework to describe non-periodic disordered arrays as well as aperiodic quasi-crystalline arrays. Flat organic light-emitting diodes (OLEDs) have low outcoupling with since most of the light is trapped in waveguided modes in higher index layers or lost to plasmonic excitations at the metal cathode. Periodically corrugated OLEDs can achieve highly enhanced for pitch values between 1000 and 2000 nm, representing an enhancement factor over planar structures. Periodic corrugations strongly diffract trapped waveguided and plasmonic modes to the emissive air cone. Disordered templates also can cause significant enhanced outcoupling with for smaller nearest-neighbor separations of 300–400 nm. Quasi-crystalline tilings can also lead to enhancements of . This framework can be utilized to design novel structured media that can generate high light extraction.
- Authors:
-
- Iowa State University, Ames, IA (United States)
- Ames Laboratory, and Iowa State University, Ames, IA (United States)
- Publication Date:
- Research Org.:
- Iowa State Univ., Ames, IA (United States)
- Sponsoring Org.:
- USDOE Office of Energy Efficiency and Renewable Energy (EERE)
- OSTI Identifier:
- 1848537
- Alternate Identifier(s):
- OSTI ID: 1812245; OSTI ID: 1812246
- Grant/Contract Number:
- EE0007621; EE0008724; AC02-05CH11231
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Journal of the Optical Society of America. Part B, Optical Physics
- Additional Journal Information:
- Journal Volume: 38; Journal Issue: 9; Journal ID: ISSN 0740-3224
- Publisher:
- Optical Society of America (OSA)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING
Citation Formats
Zhang, Yu, Biswas, Rana, Shinar, Ruth, and Shinar, Joseph. Simulation of enhanced light extraction from periodic, disordered, and quasi-periodic OLED structures. United States: N. p., 2021.
Web. doi:10.1364/josab.430593.
Zhang, Yu, Biswas, Rana, Shinar, Ruth, & Shinar, Joseph. Simulation of enhanced light extraction from periodic, disordered, and quasi-periodic OLED structures. United States. https://doi.org/10.1364/josab.430593
Zhang, Yu, Biswas, Rana, Shinar, Ruth, and Shinar, Joseph. Mon .
"Simulation of enhanced light extraction from periodic, disordered, and quasi-periodic OLED structures". United States. https://doi.org/10.1364/josab.430593. https://www.osti.gov/servlets/purl/1848537.
@article{osti_1848537,
title = {Simulation of enhanced light extraction from periodic, disordered, and quasi-periodic OLED structures},
author = {Zhang, Yu and Biswas, Rana and Shinar, Ruth and Shinar, Joseph},
abstractNote = {We have developed a rigorous scattering matrix theory of light emission from periodically structured media using a Green’s function approach. We computationally simulate the spectral power inside the structure, incorporating Purcell factor enhancements, and find internal waveguiding modes and plasmonic losses. We simulate the light-outcoupling factor η <#comment/> out and describe how corrugations and structured media can enhance η <#comment/> out . We have extended our framework to describe non-periodic disordered arrays as well as aperiodic quasi-crystalline arrays. Flat organic light-emitting diodes (OLEDs) have low outcoupling with η <#comment/> out ∼ <#comment/> 20 % <#comment/> since most of the light is trapped in waveguided modes in higher index layers or lost to plasmonic excitations at the metal cathode. Periodically corrugated OLEDs can achieve highly enhanced η <#comment/> out ∼ <#comment/> 65 % <#comment/> − <#comment/> 70 % <#comment/> for pitch values between 1000 and 2000 nm, representing an enhancement factor > <#comment/> 3 over planar structures. Periodic corrugations strongly diffract trapped waveguided and plasmonic modes to the emissive air cone. Disordered templates also can cause significant enhanced outcoupling with η <#comment/> out ∼ <#comment/> 50 % <#comment/> − <#comment/> 55 % <#comment/> for smaller nearest-neighbor separations of 300–400 nm. Quasi-crystalline tilings can also lead to enhancements of η <#comment/> out ∼ <#comment/> 50 % <#comment/> − <#comment/> 55 % <#comment/> . This framework can be utilized to design novel structured media that can generate high light extraction.},
doi = {10.1364/josab.430593},
journal = {Journal of the Optical Society of America. Part B, Optical Physics},
number = 9,
volume = 38,
place = {United States},
year = {Mon Aug 09 00:00:00 EDT 2021},
month = {Mon Aug 09 00:00:00 EDT 2021}
}
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