Strain control in optoelectronic devices
Abstract
A coating having a mismatched coefficient of thermal expansion is applied to an underlying light emitting diode (LED) or laser diode (LD), such that as the temperature of the device changes, a varying level of strain is introduced to the underlying LED or LD. Because strain can also adjust the effective bandgap energy (and hence emission wavelength) of the device, the external strain-inducing coating can act to either compensate for the wavelength shift due to temperature (resulting in reduced dλ/dT) or accentuate it (resulting in increased dλ/dT). By proper selection of coating material and geometry, full control over dλ/dT can be achieved.
- Inventors:
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1823908
- Patent Number(s):
- 10992105
- Application Number:
- 16/434,236
- Assignee:
- Lawrence Livermore National Security, LLC (Livermore, CA)
- Patent Classifications (CPCs):
-
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01L - SEMICONDUCTOR DEVICES
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01S - DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT
- DOE Contract Number:
- AC52-07NA27344
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 06/07/2019
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Voss, Lars F., and Leisher, Paul O. Strain control in optoelectronic devices. United States: N. p., 2021.
Web.
Voss, Lars F., & Leisher, Paul O. Strain control in optoelectronic devices. United States.
Voss, Lars F., and Leisher, Paul O. Tue .
"Strain control in optoelectronic devices". United States. https://www.osti.gov/servlets/purl/1823908.
@article{osti_1823908,
title = {Strain control in optoelectronic devices},
author = {Voss, Lars F. and Leisher, Paul O.},
abstractNote = {A coating having a mismatched coefficient of thermal expansion is applied to an underlying light emitting diode (LED) or laser diode (LD), such that as the temperature of the device changes, a varying level of strain is introduced to the underlying LED or LD. Because strain can also adjust the effective bandgap energy (and hence emission wavelength) of the device, the external strain-inducing coating can act to either compensate for the wavelength shift due to temperature (resulting in reduced dλ/dT) or accentuate it (resulting in increased dλ/dT). By proper selection of coating material and geometry, full control over dλ/dT can be achieved.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {4}
}
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