Modulation Frequency Dependences of Photoacoustic Signal Intensity and Phase for CdInGaS4

被引：0
|
作者：
Shen, Qing [1 ]
Toyoda, Taro [1 ]
机构：
[1] Univ Electrocommun, Dept Appl Phys & Chem, Chofu, Tokyo 1828585, Japan
来源：
JAPANESE JOURNAL OF APPLIED PHYSICS | 2000年 / 39卷 / 01期
关键词：
photoacoustic method; thermal diffusion process; carrier diffusion process; surface recombination; CdInGaS4;
D O I：
10.7567/JJAPS.39S1.459
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Modulation frequency dependences of photoacoustic (PA) signal intensity and phase in a transmission geometry were experimentally measured and theoretically calculated for CdInGaS4. It was shown that the PA signal originated from both the electronic transport process and the heat diffusion process in the sample, which could be separated at a characteristic frequency f(min). It was found that the PA signal phase reversed and the PA signal intensity showed a minimum at the frequency f(min).
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页码：459 / 460
页数：2
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