Large-area InP-based crystalline nanomembrane flexible photodetectors

Weiquan Yang; Hongjun Yang; Guoxuan Qin; Zhenqiang Ma; Berggren, Jesper; Hammar, Mattias; Soref, Richard; Weidong Zhou
March 2010
Applied Physics Letters;3/22/2010, Vol. 96 Issue 12, p121107
Academic Journal
Large-area (3×3 mm2) flexible photodetectors were realized, based on crystalline InP semiconductor nanomembranes transferred to flexible polyethylene terephthalate substrates. Very low dark current (a few microamperes) and high responsivity (0.12 A/W) were demonstrated for flexible InP p-i-n photodetectors. Bending characteristics were also investigated for this type of flexible crystalline semiconductor photodetector, and it was found that, whereas the dark current was independent of bending radii, the photocurrent degraded, depending on the bending radii.


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