NDLI: Current Spreading Effects in Vertical GaN-Based Light-Emitting Diode on Si(111) Substrate

Content Provider	IET Digital Library
Author	Wei, Jingting Zhang, Baijun Wang, Gang
Abstract	The optimal design of GaN-based Lightemitting diode (LED) is important for its reliability. In this work, a new three-Dimensional (3D) circuit model with a resistor network is developed to study the current distribution in the active layer of vertical conducting GaNbased LED grown on Si(111) substrate with different structures and electrode patterns. It consists of resistance of Transparent conductive layer (TCL), resistance of epitaxial layer, intrinsic diodes presenting the active layer, and AlN/Si junction as which the multilayer of AlN/Si is assumed. Simulations results of current distribution in active layers of two kinds of LED structures show that current distribution uniformity is greatly affected by the electrode pattern and the LED structure. Furthermore, the experimentally measured light emission uniformity agrees well with simulation results. The electrical and optical characteristics of LED are obviously affected by the current distribution uniformity.
Starting Page	672
Ending Page	677
Page Count	6
ISSN	10224653
Volume Number	25
e-ISSN	20755597
Issue Number	Issue 4, Jul (2016)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/cje/25/4
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/cje.2016.07.014
Journal	Chinese Journal of Electronics
Publisher Date	2016-07-01
Access Restriction	Open
Rights Holder	© Chinese Institute of Electronics
Subject Keyword	3D Circuit Model Active Layer AlN-Si Current Distribution Uniformity Display Technology Epitaxial Layer Gallium Compound GaN III-V SemiConductor Intrinsic Diode LED Displays LED Structure Light Emission Uniformity Light Emitting Diode TCL Three-dimensional Circuit Model Transparent Conductive Layer Vertical Based Light-emitting Diode Wide Band Gap SemiConductor
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Electrical and Electronic Engineering

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