ZnO nanowire-embedded Schottky diode for effective UV detection by the barrier reduction effect.
A zinc oxide nanowire (ZnO NW)-embedded Schottky diode was fabricated for UV detection. Two types of devices were prepared. The ZnO NW was positioned onto asymmetric metal electrodes (Al and Pt) for a Schottky device or symmetric metal electrodes (Al and Al) for an ohmic device, respectively. The Schottky device provided a rectifying current flow and was more sensitive to UV illumination than the ohmic device. The Schottky barrier plays an important role for UV detection by a UV-induced barrier reduction effect. The fabrication of the ZnO NW-embedded Schottky diode and the UV reaction mechanism are discussed in light of the UV light-induced Schottky barrier reduction effect.
Kim
Joondong
J
Nano-Mechanical Systems Research Division, Korea Institute of Machinery and Materials (KIMM), Daejeon, Korea. joonkim@kimm.re.kr
Yun
Ju-Hyung
JH
Kim
Chang Hyun
CH
Park
Yun Chang
YC
Woo
Ju Yeon
JY
Park
Jeunghee
J
Lee
Jung-Ho
JH
Yi
Junsin
J
Han
Chang-Soo
CS