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- 자료유형
- 학술저널
- 저자정보
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- 한양대학교 세라믹공정연구센터 Journal of Ceramic Processing Research Journal of Ceramic Processing Research 제23권 제2호
- 발행연도
- 2022.4
- 수록면
- 132 - 136 (5page)
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In this paper, we studied the influence of electric fields on the exciton emissions of the needle-shaped CdS rod by using thecombined photocurrent/photoluminescence (PC/PL) spectroscopies. We observed that the exciton emission strongly dependedon the electric field while the defect-related emission weakly depended on the electric field. Intensity quenching and peak-shifteffects of the exciton spectrum were observed as the electric field increased. To explain these effects, combined PC/PLmeasurements were introduced and they showed that excitons readily interact with the PC carriers of the photocreatedelectrons and holes. This interaction reduced the number of carriers participating in recombination, and the cause of theintensity decrease was attributed to the reduced recombination of free excitons. Thus, the shift of the exciton peaks was relatedto Stark effect induced by electric field. Consequently, we extracted out that exciton?electron scattering in emission spectrawere the result of an interaction induced by the external electric field.
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