Characterization of gan schottky barrier photodiodes with a low-temperature GaN Cap layer

M. L. Lee, J. K. Sheu, Y. K. Su, S. J. Chang, W. C. Lai, G. C. Chi

研究成果: Paper

摘要

By using organometallic vapor phase epitaxy (OMVPE), we have prepared i-GaN/low-temperature (LT) GaN/Ni/Au (sample A) and i-GaN/Ni/Au (sample B) Schottky barrier ultraviolet (UV) photodiodes (PDs). It was found that we could significantly reduce leakage current and achieve a much larger photocurrent to dark current contrast ratio by introducing a LT GaN on top of the conventional nitride-based UV PDs. With incident light wavelength of 350 nm and a -1 V reverse bias, it was found that the measured responsivity was around 0.1 A/W and 0.37 A/W for sample A and sample B, respectively. Furthermore, it was found that the operation speed of sample A is slower than that of sample B due to the highly resistive LT-GaN layer induced large RC time constant.

原文English
頁面260-269
頁數10
出版狀態Published - 2004 十二月 1
事件State-of-the-Art Program on Compound Semiconductors XLI and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics V - Proceedings of the International Symposia - Honolulu, HI, United States
持續時間: 2004 十月 32004 十月 8

Other

OtherState-of-the-Art Program on Compound Semiconductors XLI and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics V - Proceedings of the International Symposia
國家United States
城市Honolulu, HI
期間04-10-0304-10-08

指紋

Photodiodes
Vapor phase epitaxy
Dark currents
Organometallics
Photocurrents
Nitrides
Leakage currents
Temperature
Wavelength

All Science Journal Classification (ASJC) codes

  • Engineering(all)

引用此文

Lee, M. L., Sheu, J. K., Su, Y. K., Chang, S. J., Lai, W. C., & Chi, G. C. (2004). Characterization of gan schottky barrier photodiodes with a low-temperature GaN Cap layer. 260-269. 論文發表於 State-of-the-Art Program on Compound Semiconductors XLI and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics V - Proceedings of the International Symposia, Honolulu, HI, United States.
Lee, M. L. ; Sheu, J. K. ; Su, Y. K. ; Chang, S. J. ; Lai, W. C. ; Chi, G. C. / Characterization of gan schottky barrier photodiodes with a low-temperature GaN Cap layer. 論文發表於 State-of-the-Art Program on Compound Semiconductors XLI and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics V - Proceedings of the International Symposia, Honolulu, HI, United States.10 p.
@conference{4ca5695ad092422e99b9b5a9653fe37c,
title = "Characterization of gan schottky barrier photodiodes with a low-temperature GaN Cap layer",
abstract = "By using organometallic vapor phase epitaxy (OMVPE), we have prepared i-GaN/low-temperature (LT) GaN/Ni/Au (sample A) and i-GaN/Ni/Au (sample B) Schottky barrier ultraviolet (UV) photodiodes (PDs). It was found that we could significantly reduce leakage current and achieve a much larger photocurrent to dark current contrast ratio by introducing a LT GaN on top of the conventional nitride-based UV PDs. With incident light wavelength of 350 nm and a -1 V reverse bias, it was found that the measured responsivity was around 0.1 A/W and 0.37 A/W for sample A and sample B, respectively. Furthermore, it was found that the operation speed of sample A is slower than that of sample B due to the highly resistive LT-GaN layer induced large RC time constant.",
author = "Lee, {M. L.} and Sheu, {J. K.} and Su, {Y. K.} and Chang, {S. J.} and Lai, {W. C.} and Chi, {G. C.}",
year = "2004",
month = "12",
day = "1",
language = "English",
pages = "260--269",
note = "State-of-the-Art Program on Compound Semiconductors XLI and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics V - Proceedings of the International Symposia ; Conference date: 03-10-2004 Through 08-10-2004",

}

Lee, ML, Sheu, JK, Su, YK, Chang, SJ, Lai, WC & Chi, GC 2004, 'Characterization of gan schottky barrier photodiodes with a low-temperature GaN Cap layer', 論文發表於 State-of-the-Art Program on Compound Semiconductors XLI and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics V - Proceedings of the International Symposia, Honolulu, HI, United States, 04-10-03 - 04-10-08 頁 260-269.

Characterization of gan schottky barrier photodiodes with a low-temperature GaN Cap layer. / Lee, M. L.; Sheu, J. K.; Su, Y. K.; Chang, S. J.; Lai, W. C.; Chi, G. C.

2004. 260-269 論文發表於 State-of-the-Art Program on Compound Semiconductors XLI and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics V - Proceedings of the International Symposia, Honolulu, HI, United States.

研究成果: Paper

TY - CONF

T1 - Characterization of gan schottky barrier photodiodes with a low-temperature GaN Cap layer

AU - Lee, M. L.

AU - Sheu, J. K.

AU - Su, Y. K.

AU - Chang, S. J.

AU - Lai, W. C.

AU - Chi, G. C.

PY - 2004/12/1

Y1 - 2004/12/1

N2 - By using organometallic vapor phase epitaxy (OMVPE), we have prepared i-GaN/low-temperature (LT) GaN/Ni/Au (sample A) and i-GaN/Ni/Au (sample B) Schottky barrier ultraviolet (UV) photodiodes (PDs). It was found that we could significantly reduce leakage current and achieve a much larger photocurrent to dark current contrast ratio by introducing a LT GaN on top of the conventional nitride-based UV PDs. With incident light wavelength of 350 nm and a -1 V reverse bias, it was found that the measured responsivity was around 0.1 A/W and 0.37 A/W for sample A and sample B, respectively. Furthermore, it was found that the operation speed of sample A is slower than that of sample B due to the highly resistive LT-GaN layer induced large RC time constant.

AB - By using organometallic vapor phase epitaxy (OMVPE), we have prepared i-GaN/low-temperature (LT) GaN/Ni/Au (sample A) and i-GaN/Ni/Au (sample B) Schottky barrier ultraviolet (UV) photodiodes (PDs). It was found that we could significantly reduce leakage current and achieve a much larger photocurrent to dark current contrast ratio by introducing a LT GaN on top of the conventional nitride-based UV PDs. With incident light wavelength of 350 nm and a -1 V reverse bias, it was found that the measured responsivity was around 0.1 A/W and 0.37 A/W for sample A and sample B, respectively. Furthermore, it was found that the operation speed of sample A is slower than that of sample B due to the highly resistive LT-GaN layer induced large RC time constant.

UR - http://www.scopus.com/inward/record.url?scp=17044388241&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=17044388241&partnerID=8YFLogxK

M3 - Paper

AN - SCOPUS:17044388241

SP - 260

EP - 269

ER -

Lee ML, Sheu JK, Su YK, Chang SJ, Lai WC, Chi GC. Characterization of gan schottky barrier photodiodes with a low-temperature GaN Cap layer. 2004. 論文發表於 State-of-the-Art Program on Compound Semiconductors XLI and Nitride and Wide Bandgap Semiconductors for Sensors, Photonics, and Electronics V - Proceedings of the International Symposia, Honolulu, HI, United States.