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Tannic Acid Modified Single‐Walled Carbon Nanotube/Zinc Oxide Nanoparticle Thin Films for UV/Visible Semitransparent Photodiode‐Type Photodetectors.
- Source :
- ChemPhotoChem; May2022, Vol. 6 Issue 5, p1-12, 12p
- Publication Year :
- 2022
-
Abstract
- Flexible electronic devices have received significant attention in recent years as a result of their flexibility and portability. Carbon nanotube (CNT) films could serve as a promising material for photodetection because of their broad absorption spectral coverage. In this research, vertical ultraviolet (UV) to visible (UV/Vis) detectors based on tannic acid functionalized carbon nanotube/zinc oxide (TCNT/ZnO) heterojunctions were prepared by a simple spraying method. The TCNT electrode had excellent photoelectric properties with a sheet resistance of 40.6 Ω/sq and transmittance of 80.4 % at 550 nm, and the resulting TCNT/ZnO device could achieve photocurrent of 3.0 mA at 360 nm in the UV range, a recession time of 8.05 s, photoresponsivity of 7.12 A/W, and detectivity of 25.2×1011 Jones. As a comparison, for the pure CNT electrode with a sheet resistance of 45.5 Ω/sq and transmittance of 79.6 % at 550 nm, the CNT/ZnO photocurrent was only 0.6 mA at 360 nm, with a recession time of 17.25 s, photoresponsivity of 1.00 A/W, and detectivity of 3.4×1011 Jones. The prepared device was also able to operate stably after 1000 mechanical bending tests and maintained more than 95 % detectivity, providing a feasible path for the generation of carbon nanotube based photodetector devices. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 23670932
- Volume :
- 6
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- ChemPhotoChem
- Publication Type :
- Academic Journal
- Accession number :
- 156939700
- Full Text :
- https://doi.org/10.1002/cptc.202100208