Long-term stable and high responsivity visible-ultraviolet photodetector of Se-doped CdO film on Si by spin coating
JOURNAL OF PHYSICS D-APPLIED PHYSICS, cilt.56, sa.34, 2023 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 56 Sayı: 34
- Basım Tarihi: 2023
- Doi Numarası: 10.1088/1361-6463/acd461
- Dergi Adı: JOURNAL OF PHYSICS D-APPLIED PHYSICS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Aerospace Database, Applied Science & Technology Source, Chemical Abstracts Core, Communication Abstracts, Compendex, Computer & Applied Sciences, INSPEC, Metadex, Civil Engineering Abstracts
- Anahtar Kelimeler: CdO, heterojunction, UV photodetector, responsivity, detectivity, SENSITIZED SOLAR-CELLS, HETEROJUNCTION, NANOSTRUCTURES, TEMPERATURE, NANOWIRES, JUNCTION, GROWTH
- Atatürk Üniversitesi Adresli: Evet
Özet
Se-doped CdO thin films were prepared on p-Si substrates via spin coating. Morphological, structural and absorption measurements of CdO:Se film was performed. Then, a CdS:Se/p-Si heterojunction was produced by coating CdO:Se film on a p-Si substrate using spin coating method. From the I-V measurements, it has been seen that the device has a very good rectification feature in the dark, at room temperature. In order to investigate the performance of the device under light, a detailed analysis was performed by performing I-V measurements under ultraviolet (UV) light (365 and 395 nm, 10 mW cm(-2)) and different intensities of visible light (between 10 and 125 mW cm(-2)) as well as ambient light. It was observed that the CdO:Se/p-Si heterojunction performed well under both illumination conditions. The maximum responsivity and specific detectivity values were obtained as 0.72 and 4.47 A W-1 and 3.31 x 10(9) and 2.05 x 10(10) Jones for visible and UV regions, respectively. It was also seen that the device exhibited very high performance and stability even after 160 days.