- Tytuł:
- Multiband GaN/AlGaN UV Photodetector
- Autorzy:
-
Korona, K. P.
Drabińska, A.
Pakuła, K.
Baranowski, J. M. - Powiązania:
- https://bibliotekanauki.pl/articles/2046918.pdf
- Data publikacji:
- 2006-08
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
-
72.40.+w
73.61.Ey
73.40.Kp - Opis:
- We present optical and electrical measurements made on GaN/AlGaN photodetector structure capable to detect three UV ranges, tuned by external voltage. The highest band at energy of about 3.85 eV is nearly independent of bias applied to the Schottky contact. Photosensitivity of the second band at about 3.65 eV changes strongly with the bias. Signal in this range increases about 20 times when the bias changes from 0 V to -4 V. Photosensitivity of the third band (3.4 eV) appears for strong reverse bias (-3 V). Characteristics of the detector are in qualitative agreement with numerical model, however deep centers present in the AlGaN layers cause quantitative discrepancies. The concentration of defects of the order of 10$\text{}^{16}$ cm$\text{}^{-3}$ was estimated from current transients.
- Źródło:
-
Acta Physica Polonica A; 2006, 110, 2; 211-217
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł