Time-resolved electroluminescence studies of III-nitride ultraviolet photonic-crystal light-emitting diodes

J. Shakya; J. Y. Lin; H. X. Jiang

doi:10.1063/1.1786372

Time-resolved electroluminescence studies of III-nitride ultraviolet photonic-crystal light-emitting diodes

J. Shakya, J. Y. Lin, H. X. Jiang

Electrical and Computer Engineering

Research output: Contribution to journal › Article › peer-review

20 Scopus citations

Abstract

The transient responses of III-nitride ultraviolet (UV) ionic-crystal light-emitting diodes (LED) were investigated using picosecond time-resolved electroluminescence (EL) spectroscopy. Triangular arrays of photonic crystals (PC) were fabricated on 333 nm UV LEDs for enhancing light extraction efficiency using electron-beam lithography and inductively coupled-plasma drying etching. The EL decay time constant decreased systematically with increase of etched sidewall area, which indicated strong effect of surface recombination. The results show that with increase in transient response along with enhanced light extraction, the incorporation of PCs in UV LEDs provide an effective method to control modulation speed of UV LEDs.

Original language	English
Pages (from-to)	2104-2106
Number of pages	3
Journal	Applied Physics Letters
Volume	85
Issue number	11
DOIs	https://doi.org/10.1063/1.1786372
State	Published - Sep 13 2004

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@article{0c91cf2b4ecf403aa47399cf171d818c,

title = "Time-resolved electroluminescence studies of III-nitride ultraviolet photonic-crystal light-emitting diodes",

abstract = "The transient responses of III-nitride ultraviolet (UV) ionic-crystal light-emitting diodes (LED) were investigated using picosecond time-resolved electroluminescence (EL) spectroscopy. Triangular arrays of photonic crystals (PC) were fabricated on 333 nm UV LEDs for enhancing light extraction efficiency using electron-beam lithography and inductively coupled-plasma drying etching. The EL decay time constant decreased systematically with increase of etched sidewall area, which indicated strong effect of surface recombination. The results show that with increase in transient response along with enhanced light extraction, the incorporation of PCs in UV LEDs provide an effective method to control modulation speed of UV LEDs.",

author = "J. Shakya and Lin, {J. Y.} and Jiang, {H. X.}",

note = "Funding Information: The authors would like to acknowledge support by grants from DARPA, ARO, DOE, and NSF. ",

year = "2004",

month = sep,

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doi = "10.1063/1.1786372",

language = "English",

volume = "85",

pages = "2104--2106",

journal = "Applied Physics Letters",

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TY - JOUR

T1 - Time-resolved electroluminescence studies of III-nitride ultraviolet photonic-crystal light-emitting diodes

AU - Shakya, J.

AU - Lin, J. Y.

AU - Jiang, H. X.

N1 - Funding Information: The authors would like to acknowledge support by grants from DARPA, ARO, DOE, and NSF.

PY - 2004/9/13

Y1 - 2004/9/13

N2 - The transient responses of III-nitride ultraviolet (UV) ionic-crystal light-emitting diodes (LED) were investigated using picosecond time-resolved electroluminescence (EL) spectroscopy. Triangular arrays of photonic crystals (PC) were fabricated on 333 nm UV LEDs for enhancing light extraction efficiency using electron-beam lithography and inductively coupled-plasma drying etching. The EL decay time constant decreased systematically with increase of etched sidewall area, which indicated strong effect of surface recombination. The results show that with increase in transient response along with enhanced light extraction, the incorporation of PCs in UV LEDs provide an effective method to control modulation speed of UV LEDs.

AB - The transient responses of III-nitride ultraviolet (UV) ionic-crystal light-emitting diodes (LED) were investigated using picosecond time-resolved electroluminescence (EL) spectroscopy. Triangular arrays of photonic crystals (PC) were fabricated on 333 nm UV LEDs for enhancing light extraction efficiency using electron-beam lithography and inductively coupled-plasma drying etching. The EL decay time constant decreased systematically with increase of etched sidewall area, which indicated strong effect of surface recombination. The results show that with increase in transient response along with enhanced light extraction, the incorporation of PCs in UV LEDs provide an effective method to control modulation speed of UV LEDs.

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U2 - 10.1063/1.1786372

DO - 10.1063/1.1786372

M3 - Article

AN - SCOPUS:5444253712

SN - 0003-6951

VL - 85

SP - 2104

EP - 2106

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 11

ER -

Time-resolved electroluminescence studies of III-nitride ultraviolet photonic-crystal light-emitting diodes

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