InGaN p-i-n ultraviolet-A band-pass photodetectors

T. K. Ko*, S. C. Shei, S. J. Chang, Y. Z. Chiou, R. M. Lin, W. S. Chen, C. F. Shen, C. S. Chang, K. W. Lin

*Corresponding author for this work

Research output: Contribution to journalJournal Article peer-review

5 Scopus citations

Abstract

InGaN p-i-n ultraviolet (UV)-A band-pass photodetectors (PDs) with indium-tin-oxide (ITO) contact and with flip-chip (FC) technology were both fabricated and characterised. With -5V applied bias, it was found that measured dark currents were 7×10-10 and 4×10-10 A for FC p-i-n PDs with i-In0.1Ga0.9N and i-In 0.05Ga0.95N active layers, respectively. With an incident light wavelength of 385nm, it was found that external quantum efficiencies of FC p-i-n PD and ITO p-i-n PD were around 67 and 35, respectively. The rejection ratios of FC p-i-n PD were also found to be larger than those observed from ITO p-i-n PD.

Original languageEnglish
Pages (from-to)212-214
Number of pages3
JournalIEE Proceedings: Optoelectronics
Volume153
Issue number4
DOIs
StatePublished - 08 2006

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