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. | |
刊名 | Materials Horizons
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2018 | |
卷号 | 5期号:1页码:116-122 |
关键词 | light-emitting-diodes quantum-wells power performance compensation efficiency droop Chemistry Materials Science |
ISSN号 | 2051-6347 |
DOI | 10.1039/c7mh00876g |
英文摘要 | 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. |
内容类型 | 期刊论文 |
源URL | [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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