التفاصيل البيبلوغرافية
| العنوان: |
Photogating Effect-Driven Photodetectors and Their Emerging Applications. |
| المؤلفون: |
Shin, Jihyun1 (AUTHOR), Yoo, Hocheon1 (AUTHOR) hyoo@gachon.ac.kr |
| المصدر: |
Nanomaterials (2079-4991). Mar2023, Vol. 13 Issue 5, p882. 21p. |
| مصطلحات موضوعية: |
*PHOTODETECTORS, *PHOTOELECTRIC effect, *POTENTIAL energy, *THRESHOLD voltage, *DIELECTRICS |
| مستخلص: |
Rather than generating a photocurrent through photo-excited carriers by the photoelectric effect, the photogating effect enables us to detect sub-bandgap rays. The photogating effect is caused by trapped photo-induced charges that modulate the potential energy of the semiconductor/dielectric interface, where these trapped charges contribute an additional electrical gating-field, resulting in a shift in the threshold voltage. This approach clearly separates the drain current in dark versus bright exposures. In this review, we discuss the photogating effect-driven photodetectors with respect to emerging optoelectrical materials, device structures, and mechanisms. Representative examples that reported the photogating effect-based sub-bandgap photodetection are revisited. Furthermore, emerging applications using these photogating effects are highlighted. The potential and challenging aspects of next-generation photodetector devices are presented with an emphasis on the photogating effect. [ABSTRACT FROM AUTHOR] |
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