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Measurement and prediction of efficiency loss in LEDs Strang, Kiel; Greenstreet, Laura
Abstract
An order of magnitude improvement in power efficiency of light emitting diodes (LEDs) over incandescents makes them ideally suited for a variety of applications. GaInN LEDs, used to produce white light, exhibit a loss of efficiency with increased power. By measuring the efficiency of GaInN and GaAs LEDs we found losses beginning within their rated range. Linear regression allowed us to develop polynomial and power law models for efficiency loss. Models were evaluated using measurements at high power, with the power law model providing the best fit. Our results suggest further research should be conducted on temperature-related efficiency loss and its underlying causes.
Item Metadata
Title |
Measurement and prediction of efficiency loss in LEDs
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Creator | |
Date Issued |
2012
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Description |
An order of magnitude improvement in power efficiency of light emitting diodes (LEDs) over incandescents makes them ideally
suited for a variety of applications. GaInN LEDs, used to produce white light, exhibit a loss of efficiency with increased power. By
measuring the efficiency of GaInN and GaAs LEDs we found losses beginning within their rated range. Linear regression allowed
us to develop polynomial and power law models for efficiency loss. Models were evaluated using measurements at high power,
with the power law model providing the best fit. Our results suggest further research should be conducted on temperature-related
efficiency loss and its underlying causes.
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Genre | |
Type | |
Language |
eng
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Series | |
Date Available |
2012-06-08
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Provider |
Vancouver : University of British Columbia Library
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Rights |
Attribution-NonCommercial-NoDerivatives 4.0 International
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DOI |
10.14288/1.0107232
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URI | |
Affiliation | |
Campus | |
Peer Review Status |
Unreviewed
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Scholarly Level |
Undergraduate
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Rights URI | |
Aggregated Source Repository |
DSpace
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Rights
Attribution-NonCommercial-NoDerivatives 4.0 International