TY - JOUR
T1 - Enhancing UV photoconductivity of ZnO nanobelt by polyacrylonitrile functionalization
AU - He, J. H.
AU - Lin, Yen H.
AU - McConney, Michael E.
AU - Tsukruk, Vladimir V.
AU - Wang, Zhong L.
AU - Bao, Gang
PY - 2007/10/15
Y1 - 2007/10/15
N2 - UV photodetector fabricated using a single ZnO nanobelt (NB) has shown a photoresponse enhancement up to 750 times higher than that of a bare ZnO NB after coating with ∼20 nm plasma polymerized acrylonitrile (PP-AN) nanoscale film. The mechanism for this colossal photoconductivity is suggested as a consequence of the efficient exciton dissociation under UV illumination due to enhanced electron transfer from valence band of ZnO NB to the PP-AN and then back to the conduction band of ZnO. This process has demonstrated an easy and effective method for improving the performance of the nanowireNB-based devices, possibly leading to supersensitive UV detector for applications in imaging, photosensing, and intrachip optical interconnects.
AB - UV photodetector fabricated using a single ZnO nanobelt (NB) has shown a photoresponse enhancement up to 750 times higher than that of a bare ZnO NB after coating with ∼20 nm plasma polymerized acrylonitrile (PP-AN) nanoscale film. The mechanism for this colossal photoconductivity is suggested as a consequence of the efficient exciton dissociation under UV illumination due to enhanced electron transfer from valence band of ZnO NB to the PP-AN and then back to the conduction band of ZnO. This process has demonstrated an easy and effective method for improving the performance of the nanowireNB-based devices, possibly leading to supersensitive UV detector for applications in imaging, photosensing, and intrachip optical interconnects.
UR - http://www.scopus.com/inward/record.url?scp=35648940250&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-35648940250&origin=recordpage
U2 - 10.1063/1.2798390
DO - 10.1063/1.2798390
M3 - RGC 21 - Publication in refereed journal
SN - 0021-8979
VL - 102
JO - Journal of Applied Physics
JF - Journal of Applied Physics
IS - 8
M1 - 084303
ER -