Abstract
Photocurrent of a single ZnO nanowire synthesized by a sol-gel route was investigated. In vacuum, the dark current was bigger but the photoresponse was slower than that in air, attributed to the release of the available charge carriers by the desorption of water molecules and the decrease of the exchange rates of molecular ions. Under the steady radiation of the ultraviolet light (λ=325 nm), a gradual decrease of the photocurrent was noticeable, which can be explained in terms of the annihilation of the carriers by the replacement of hydroxyl groups (OH-) by O2-, resulting in the decrease of charge carriers.
| Original language | English |
|---|---|
| Article number | 153106 |
| Journal | Applied Physics Letters |
| Volume | 90 |
| Issue number | 15 |
| DOIs | |
| Publication status | Published - 2007 Apr 24 |
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ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
Cite this
Origin of the slow photoresponse in an individual sol-gel synthesized ZnO nanowire. / Ahn, Seung E.; Ji, Hyun Jin; Kim, Kanghyun; Kim, Gyu-Tae; Bae, Chang Hyun; Park, Seung Min; Kim, Yong Kwan; Ha, Jeong Sook.
In: Applied Physics Letters, Vol. 90, No. 15, 153106, 24.04.2007.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Origin of the slow photoresponse in an individual sol-gel synthesized ZnO nanowire
AU - Ahn, Seung E.
AU - Ji, Hyun Jin
AU - Kim, Kanghyun
AU - Kim, Gyu-Tae
AU - Bae, Chang Hyun
AU - Park, Seung Min
AU - Kim, Yong Kwan
AU - Ha, Jeong Sook
PY - 2007/4/24
Y1 - 2007/4/24
N2 - Photocurrent of a single ZnO nanowire synthesized by a sol-gel route was investigated. In vacuum, the dark current was bigger but the photoresponse was slower than that in air, attributed to the release of the available charge carriers by the desorption of water molecules and the decrease of the exchange rates of molecular ions. Under the steady radiation of the ultraviolet light (λ=325 nm), a gradual decrease of the photocurrent was noticeable, which can be explained in terms of the annihilation of the carriers by the replacement of hydroxyl groups (OH-) by O2-, resulting in the decrease of charge carriers.
AB - Photocurrent of a single ZnO nanowire synthesized by a sol-gel route was investigated. In vacuum, the dark current was bigger but the photoresponse was slower than that in air, attributed to the release of the available charge carriers by the desorption of water molecules and the decrease of the exchange rates of molecular ions. Under the steady radiation of the ultraviolet light (λ=325 nm), a gradual decrease of the photocurrent was noticeable, which can be explained in terms of the annihilation of the carriers by the replacement of hydroxyl groups (OH-) by O2-, resulting in the decrease of charge carriers.
UR - http://www.scopus.com/inward/record.url?scp=34247279844&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34247279844&partnerID=8YFLogxK
U2 - 10.1063/1.2721289
DO - 10.1063/1.2721289
M3 - Article
VL - 90
JO - Applied Physics Letters
JF - Applied Physics Letters
SN - 0003-6951
IS - 15
M1 - 153106
ER -