Ultraviolet photodetectors using transparent gate AlGaN/GaN high electron mobility transistor on silicon substrate
Japanese Journal of Applied Physics, ISSN: 0021-4922, Vol: 52, Issue: 1 PART2
2013
- 32Citations
- 24Captures
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Article Description
In this paper, UV photoconductivity of a transparent gate AlGaN/GaN high electron mobility transistor (HEMT) on a Si substrate is demonstrated. The transparent gate enables the HEMT to standby under pinch-off conditions for operation as a photodetector. Therefore, the device can overcome the drawback of high standby-current in conventional metal gate field-effect transistor (FET)-based photodetectors without sacrificing its high responsivity. A negative threshold-voltage shift of -0.25 V and a significant drain-current increase over two orders of magnitude were observed under UV-light irradiation condition from the surface-side. A high responsivity of 2.0 × 10 A/W at 360nm with a low leakage current of 3 × 10 A/mm was simultaneously achieved. These experimental results were in agreement with the models for generation of a photo carrier and its transportation in a heterostructure. © 2013 The Japan Society of Applied Physics.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84872844197&origin=inward; http://dx.doi.org/10.7567/jjap.52.01ag06; http://stacks.iop.org/1347-4065/52/01AG06; https://iopscience.iop.org/article/10.7567/JJAP.52.01AG06; https://dx.doi.org/10.7567/jjap.52.01ag06; https://validate.perfdrive.com/9730847aceed30627ebd520e46ee70b2/?ssa=9df649c2-0006-4446-9e55-1fab10d9941a&ssb=14824209366&ssc=https%3A%2F%2Fiopscience.iop.org%2Farticle%2F10.7567%2FJJAP.52.01AG06&ssi=654b97de-cnvj-47b2-b0ea-d7d198d958c3&ssk=botmanager_support@radware.com&ssm=969430148532973702458514985342515301&ssn=f39d5bbbeae332d74c78f820cda1a607ac0bfe105911-65fe-48dc-844a12&sso=5279f150-9319bfde79b5665fd8e917278723b6c5a17d3d69682e8b65&ssp=39964075521726279259172647036952820&ssq=40034687657864764089063731507770016082039&ssr=NTIuMy4yMTcuMjU0&sst=com.plumanalytics&ssu=&ssv=&ssw=&ssx=eyJfX3V6bWYiOiI3ZjYwMDBmY2NjNzQxOC1mYzFiLTRjNmEtODMwYS1iMjY5YmYxNWM5NTIxNzI2MjYzNzMxNDQwMjEyODQ2NTk2LWM4ODYzOWEwMTRjYmU2N2MyNDU3OTQiLCJ1em14IjoiN2Y5MDAwMzZjZDcxYjQtYzE1Yy00OTVhLWFjNjEtNTM4YWIxMWM0ZjdhNC0xNzI2MjYzNzMxNDQwMjEyODQ2NTk3LWQxNjk0YWM0YWRmMGE4MzYyNDU3NzYiLCJyZCI6ImlvcC5vcmcifQ==
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