Arsenic-doped ZnO films were prepared by adding As2O3 to sol-gel ZnO spin coating synthesis. The preferential (002) orientation improved, and the grain size of ZnO lattice increased with As-doping in ZnO films. UV transmittance over 70% with a blue shift was observed after As-doping. In particular, ZnO film with an As concentration of 6.7 at% showed a carrier concentration of 1.62 x 1019/cm3, mobility of 94.0 cm 2/Vs, and resistivity of 3.99 × 10-3 Ω cm. It was suggested that formation of As-2VZn increased the carrier concentration and induced the blue shift, and the increase in grain size increased the mobility of p-type ZnO films.
Bibliographical noteFunding Information:
This work was supported by a New & Renewable Energy Technology Development Program of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant funded by the Korean Government Ministry of Knowledge Economy ( 20113020010010 ). This work was also supported by the Priority Research Centers Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology ( 2009-0093823 ).
All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Materials Chemistry