期刊
ADVANCED FUNCTIONAL MATERIALS
卷 23, 期 27, 页码 3398-3403出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adfm.201203309
关键词
organic-inorganic heterojunctions; flexible photodetectors; silicon nanomembranes; pentacene
类别
资金
- AFOSR [FA9550-091-0482, FA9550-08-1-0337]
- Basic Science Research Program through the National Research Foundation of Korea (NRF)
- Ministry of Education, Science and Technology [2012R1A6A3A04039396]
- RFID R&D program of MKE/KEIT [10035225]
A mesh patterned n-type single-crystalline silicon nanomembrane (SiNM) created from a silicon-on-insulator (SOI) wafer is complementally combined with a p-type pentacene layer to form a heterogeneous p-n junction on a flexible plastic substrate. Excellent rectifying characteristics are obtained from the heterogeneous p-n diode. The diode also exhibits photosensitivity at visible wavelengths with a photo-to-dark current ratio exceeding four orders, a responsivity of 0.7 A/W, and an external quantum efficiency of 21.9% at 633 nm. Over 60% average transmittance in the visible spectrum is measured from the heterogeneous multilayer junction on a plastic substrate. Outstanding mechanical bending characteristics are observed with up to 1.08% of strain applied to the diode. These results suggest that organic-inorganic heterogeneous integration may be a viable strategy to build flexible organic-inorganic heterojunction devices and thus enable a number of novel multifunctional applications.
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