The proposal in the study is an improved analytical method resulted from the modification of the conventional curve fitting method which is regarded as a strong mean to determine the physical factors related to the behaviors of carriers involved in the analytical process of thermally stimulated current characteristics observed on material, and the nomenclature of which is designated as "Optimal curve fitting" method. The test material selected in the study is polyvinylidene fluoride which is regarded recently as the excellent pyro- and pyro- electric polymer, and the selected peaky for the purpose of present investigation are restricted to those of two complex relaxation peaks observed one at low temperature side and title other at high temperature side. Those peaks can be decomposed into many individual single relaxation peaks by means of thermal cleaning method and numerical computation is carried out for obtained individual single peaks by adapting "Optimal curve fitting" method. In the process of numerical computation it is theoretically possible to obtain such physical factors as the magnitude and the temperature of peak, relaxation time, activation energy and depth of traps, those of which are related to the characteristics concerned. Furthermore, by the use of those theoritical values, the original complex peak is possibly reproducible with a fine precission in the all temperature range observed. Accordingly this fact is regarded as the evidence of a strong reliability of the proposed "Optimal curve fitting" method to adopt for practical use.

관측된 TSC 피크로부터 재료내에 함유되어 있는 하전입자와 관련된 기본적 물리량을 신속하고 정확하게 평가학 수 있는 종래의 curve fitting법을 발전시킨 새로운 해석법을 제안하였으며, 여기서 이것을 optimal curve fitting법이라 명칭하였다. 특히 본 연구에서는 근래 우수한 압전·초전성의 고분자로서 주목받고 있는 PVDF 에 대하여 실온이하의 저온영역과 그 이상의 고온영역에서 관측되는 각기 다근 성질의 복합완화특성을 갖고 있는 TSC 피크들을 thermal cleaning법에 의해 독립된 단일완화 특성을 갖는 피크로 분해한 후 각각의 피크에 대해 optimal curve fitting법을 이용한 수치계간을 실행하였으며, 수치계산의 실행과정에서 이론적인 TSC의 피크값, 피크온도 및 완화시간, 활성화에너지, 트랩깊이 등의간련된 물리량을 구하였다. 그 결과로부터 수치계간에 의해 구한 이론적 피크전류와 피크온도값이 실험에 의해 관측된 값들과 잘 일치하고 있으며, 특히 전온도멈위에 걸친 TSC곡선이 잘 일치하고 있음을 확인함으로서 본 연구에서 제안하는 optimal curve fitting법의 신뢰성을 입증하였다.

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