تقرير
Ultrasensitive Self-powered large area planar GaN UV-photodetector using reduced graphene oxide electrodes
| العنوان: | Ultrasensitive Self-powered large area planar GaN UV-photodetector using reduced graphene oxide electrodes |
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| المؤلفون: | Prakash, Nisha, Singh, Manjri, Kumar, Gaurav, Barvat, Arun, Anand, Kritika, Pal, Prabir, Singh, Surinder P., Khanna, Suraj P. |
| سنة النشر: | 2016 |
| المجموعة: | Condensed Matter |
| مصطلحات موضوعية: | Condensed Matter - Materials Science |
| الوصف: | A simplistic design of a self-powered UV-photodetector device based on hybrid r-GO/GaN is demonstrated. Under zero bias, the fabricated hybrid photodetector shows a photosensivity of ~ 85% while ohmic contact GaN photodetector with identical device structure exhibits only ~ 5.3% photosensivity at 350 nm illumination (18 microWatt/cm^2). The responsivity and detectivity of the hybrid device were found to be 1.54 mA/W and 1.45x10^10 Jones (cm Hz^(1/2) W^(-1)), respectively at zero bias under 350 nm illumination (18 microWatt/cm^2) with fast response (60 ms), recovery time (267 ms) and excellent repeatability. Power density-dependent responsivity & detectivity revealed ultrasensitive behaviour under low light conditions. The source of observed self-powered effect in hybrid photodetector is attributed to the depletion region formed at the r-GO and GaN quasi-ohmic interface. Comment: 11 pages, 4 figures, submitted to APL on 31 August, 2016 |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1063/1.4971982 |
| URL الوصول: | http://arxiv.org/abs/1611.03597 |
| رقم الأكسشن: | edsarx.1611.03597 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1063/1.4971982 |
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