Study on the spectral response of the Schottky photodetector of GaN
He Zheng (何政)ab, Kang Yong (亢勇)ab, Tang Ying-Wen (汤英文)ab, Li Xue (李雪)a, Fang Jia-Xiong (方家熊)a
a State Key Laboratory of Transducer Technology, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, China; b Graduates School of Chinese Academy of Sciences, Beijing 100039, China
Abstract The Schottky photodetector was fabricated on GaN epilayers grown by metalorganic chemical vapour deposition (MOCVD). The spectral response of the Schottky photodetector was characterized. A new model is proposed to interpret the characteristic of the spectral response curve of the Schottky photodetectors by introducing a penetrating distance of an incident light at a certain wavelength in the current continuity equation and the interface recombination at the metal--semiconductor rectifying contact. The expressions for the spectral response of the Schottky photodetector are deduced and used successfully to fit the experimental data.
Accepted manuscript online:
PACS:
85.60.Gz
(Photodetectors (including infrared and CCD detectors))
(Optoelectronic device characterization, design, and modeling)
Fund: Project supported by Science Committee
and Technology Foundation of Shanghai, China (Grant No 04dg05116).
Cite this article:
He Zheng (何政), Kang Yong (亢勇), Tang Ying-Wen (汤英文), Li Xue (李雪), Fang Jia-Xiong (方家熊) Study on the spectral response of the Schottky photodetector of GaN 2006 Chinese Physics 15 1325
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.
