THERMAL-DIFFUSIVITY OF SEMICONDUCTORS EVALUATED BY DIFFERENTIAL PPE METHOD

被引：15

作者：

MORIMOTO, J

OKAMOTO, Y

MIYAKAWA, T

机构：

[1] Department of Materials Science and Engineering, The National Defense Academy, Kanagawa, 1-10-20, Hashirimizu

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1992年 / 31卷

关键词：

PAS; DIFFERENTIAL PPE; PHOTOPYROELECTRIC EFFECT; THERMAL DIFFUSIVITY; PVF2; CDS;

D O I：

10.7567/JJAPS.31S1.38

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Differential PPE (photopyroelectric) method is proposed to measure local thermal diffusivity of semiconductors. In stead of signal amplitude vs distance relation, the phase difference vs modulation frequency characteristics are measured. Differential PPE method reflects the local thermal property irrespective to the generated heat by absorbed light. The thermal diffusivity of polycrystalline CdS detected by PVF2 transducer was found slightly lower compared with that of single crystalline CdS.

引用

页码：38 / 40

页数：3

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