Band gap energy and photocurrent splitting for CdIn2Te4 crystal by photocurrent spectroscopy

$CdIn_2Te_4$ 결정의 띠간격 에너지의 온도 의존성과 가전자대 갈라짐에 대한 연구

Single crystal of $CdIn_2Te_4$ were grown by the Bridgman method without using seed crystals. From photocurrent measurements, its was found that three peaks, A, B, and C, correspond to the instrinsic transition from the valence band states of ${\Gamma}_7$(A), ${\Gamma}_6$(B), and ${\Gamma}_7$(C) to the conducton band states of ${\Gamma}_6$, respectively. Crystal field splitting and spin orbit splitting were found to be at 0.2360 eV and 0.1119 eV, respectively, from found to be photocurrent spectroscopy.