Structural and optical properties of a radio frequency magnetron-sputtered ZnO thin film with different growth angles.
This study introduces optical properties of a columnar structured zinc oxide [ZnO] antireflection coating for solar cells. We obtained ZnO films of columnar structure on glass substrates using a specially designed radio frequency magnetron sputtering system with different growth angles. Field-emission scanning electron microscopy was utilized to check the growth angles of the ZnO films which were controlled at 0°, 15°, and 30°. The film thickness was fixed at 100 nm to get a constant experiment condition. Grain sizes of the ZnO films were measured by X-ray diffraction. A UV-visible spectrometer was used to measure the transmittance and reflectance of the ZnO film columnar structures as a function of the growth angles.
School of Electrical, Electronics and Control Engineering, Hanbat National University, Daejeon, 305-719, Republic of Korea. wschoi@hanbat.ac.kr.
Ki-Han
KH
Ko
Yeun-Ho
YH
Joung
Won Seok
WS
Choi
Mungi
M
Park
Jaehyung
J
Lee
Hyun-Suk
HS
Hwang