A Universal Method of Producing Transparent Electrodes Using Wide-Bandgap Materials
作者： Hee-Dong Kim , Ho-Myoung An , Kyoung Heon Kim , Su Jin Kim , Chi Sun Kim
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摘要: A UV light‐emitting diode (LED) is an eco‐friendly optical source with diverse applications. However, currently, the external quantum efficiency (EQE) of AlGaN‐based UV LEDs, particularly in the UV‐C band (< 280 nm), is very low (< 11%) mainly due to a large optical absorption via p‐GaN contact layers. A direct Ohmic contact to p‐AlGaN layers should be obtained using UV‐transparent conductive electrodes (TCEs) to solve this problem. A universal method is presented here to make such contact using electrical breakdown, with …
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