Flexible Light-Emitting Diodes Based on Vertical Nitride Nanowires

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• 作者：Xing Dai ; Agnes Messanvi ; Hezhi Zhang ; Christophe Durand ; Jo毛l Eymery ; Catherine Bougerol ; Fran莽ois H. Julien ; Maria Tchernycheva
• 刊名：Nano Letters
• 出版年：2015
• 出版时间：October 14, 2015
• 年：2015
• 卷：15
• 期：10
• 页码：6958-6964
• 全文大小：473K
• ISSN：1530-6992

文摘

We demonstrate large area fully flexible blue LEDs based on core/shell InGaN/GaN nanowires grown by MOCVD. The fabrication relies on polymer encapsulation, nanowire lift-off and contacting using silver nanowire transparent electrodes. The LEDs exhibit rectifying behavior with a light-up voltage around 3 V. The devices show no electroluminescence degradation neither under multiple bending down to 3 mm curvature radius nor in time for more than one month storage in ambient conditions without any protecting encapsulation. Fully transparent flexible LEDs with high optical transmittance are also fabricated. Finally, a two-color flexible LED emitting in the green and blue spectral ranges is demonstrated combining two layers of InGaN/GaN nanowires with different In contents.