Independent variations of applied voltage and injection current for controlling the quantumconfined Stark effect in an InGaN/GaN quantum-well light-emitting diode

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Title:	Independent variations of applied voltage and injection current for controlling the quantumconfined Stark effect in an InGaN/GaN quantum-well light-emitting diode
Authors:	姚毓峰;Chen, Horng-Shyang;Liu, Zhan Hui;Shih, Pei-Ying;Su, Chia-Ying;Chen, Chih-Yen;Lin, Chun-Han;Yao, Yu-Feng;Kiang, Yean-Woei;Yang, C. C.
Contributors:	資訊電機學院電機工程學系
Date:	2014-01-01
Issue Date:	2026-04-23 14:16:35 (UTC+8)
Publisher:	The Optical Society;United States
Abstract:	摘要： A reverse-biased voltage is applied to either device in the vertical configuration of two light-emitting diodes (LEDs) grown on patterned and flat Si (110) substrates with weak and strong quantum-confined Stark effects (QCSEs), respectively, in the InGaN/GaN quantum wells for independently controlling the applied voltage across and the injection current into the p-i-n junction in the lateral configuration of LED operation. The results show that more carrier supply is needed in the LED of weaker QCSE to produce a carrier screening effect for balancing the potential tilt in increasing the forward-biased voltage, when compared with the LED of stronger QCSE. The small spectral shift range in increasing injection current in the LED of weaker QCSE is attributed not only to the weaker QCSE, but also to its smaller device resistance such that a given increment of applied voltage leads to a larger increment of injection current. From a viewpoint of practical application in LED operation, by applying a reverse-biased voltage in the vertical configuration, the applied voltage and injection current in the lateral configuration can be independently controlled by adjusting the vertical voltage for keeping the emission spectral peak fixed. 其他題名： Opt Express 出版者： United States 出版日期： 2014-04-07 出處： Optics express, 2014-04, Vol.22 (7), p.8367 資源來源： Optica Publishing Group Journals 識別號： ISSN: 1094-4087 識別號： EISSN: 1094-4087 識別號： DOI: 10.1364/OE.22.008367 識別號： PMID: 24718210
Appears in Collections:	[Department of Electrical Engineering] journal & Dissertation

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