In:
Advanced Photonics Research, Wiley, Vol. 3, No. 11 ( 2022-11)
Abstract:
2D bulk PdSe 2 , a group 10 noble metal dichalcogenide, is recognized as a newly found far‐infrared material with a bandgap energy ( E G ) of ≈0.05 eV and thus has attracted much attention as an optoelectronic material. However, the bandgap energy of bulk PdSe 2 is the subject of a controversial debate as a middle bandgap of ≈0.3 eV is also reported by electrical transport measurements. Although determining E G by optical absorption measurement is essential, the difficulty lies in the weak absorption caused by indirect transition. Herein, it is quantitatively estimated that the indirect E G of bulk PdSe 2 is indeed 0.5 eV at 40 K based on the highly sensitive spectroscopic method of Fourier‐transformation photocurrent spectroscopy. Herein, it is suggested that the potential application of PdSe 2 should be properly selected.
Type of Medium:
Online Resource
ISSN:
2699-9293
,
2699-9293
DOI:
10.1002/adpr.202200231
Language:
English
Publisher:
Wiley
Publication Date:
2022
detail.hit.zdb_id:
3009932-8
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