An effective approach to alleviating the thermal effect in microstripe array-LEDs via the piezo-phototronic effect

doi:10.1039/c7mh00876g

CIOMP OpenIR

	An effective approach to alleviating the thermal effect in microstripe array-LEDs via the piezo-phototronic effect
	Du, C. H.; Jing, L.; Jiang, C. Y.; Liu, T.; Pu, X.; Sun, J. M.; Li, D. B.; Hu, W. G.
	2018
发表期刊	Materials Horizons
ISSN	2051-6347
卷号	5 期号:1 页码:116-122
摘要	Micro-LEDs, with unparalleled high brightness compared to conventional LEDs and OLEDs, have been regarded as a research priority for high-power light emitting diodes. Thermal issue is an inevitable concern in LED operation, leading to luminescence degradation and lifetime shortening. Here we studied the role the piezo-phototronic effect played in the luminescence enhancement of microstripe array-LEDs via strain compensation at room temperature. And also, we firstly reveal the effective modulation of the piezo-phototronic effect on luminescence characteristics at high temperatures via EL measurements with the temperature increasing from 300 K to 380 K. Industrial GaN-based high-power LEDs have been reported to be commonly operated in the temperature range of 70-90 degrees C. Compared to at 300 K, the integrated EL intensity at 364 K decreases to 67.8% without strain; however, by applying a strain of 0.09%, it is demonstrated to rise to as high as 104% of that at 300 K. This work deepens the understanding of the high-temperature piezo-phototronic effect and will give significant guidance for high-power LEDs from the important direction of nitride semiconductors.
关键词	light-emitting-diodes quantum-wells power performance compensation efficiency droop Chemistry Materials Science
DOI	10.1039/c7mh00876g
收录类别	SCI
引用统计
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/60571
专题	中国科学院长春光学精密机械与物理研究所
推荐引用方式 GB/T 7714	Du, C. H.,Jing, L.,Jiang, C. Y.,et al. An effective approach to alleviating the thermal effect in microstripe array-LEDs via the piezo-phototronic effect[J]. Materials Horizons,2018,5(1):116-122.
APA	Du, C. H..,Jing, L..,Jiang, C. Y..,Liu, T..,Pu, X..,...&Hu, W. G..(2018).An effective approach to alleviating the thermal effect in microstripe array-LEDs via the piezo-phototronic effect.Materials Horizons,5(1),116-122.
MLA	Du, C. H.,et al."An effective approach to alleviating the thermal effect in microstripe array-LEDs via the piezo-phototronic effect".Materials Horizons 5.1(2018):116-122.

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