标题:
Ultraviolet-Visible Electroluminescence of a p-ZnO:As/n-Si Device Formed by the GaAs Interlayer Doping Method
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论文类型:
期刊论文
发表刊物:
CHINESE PHYSICS LETTERS
收录刊物:
Scopus、SCIE、ISTIC
卷号:
28
期号:
10
ISSN号:
0256-307X
摘要:
Arsenic doped p-type ZnO films were grown on n-type silicon substrates using the GaAs interlayer doping method. Under our growth conditions the main doping element is arsenic, which was confirmed by x-ray photoelectroscopy. X-ray diffraction measurements revealed that the p-ZnO:As film was still in the (002) preferred orientation. The Hall test showed that the hole concentration of the p-ZnO: As film was 2.6 x 10(17) cm(-3). The acceptor level was located at 135 meV above the valance band maximum, according to the low-temperature photoluminescence results. We then fabricated a p-ZnO:As/n-Si heterojunction light-emitting device. Its current-voltage curve showed the typical rectifying behavior of a p-n diode. At forward current injections, the electroluminescence peaks, which cover the ultraviolet-to-visible region, could be clearly detected.
发表时间:
2011-10-01