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Sattra Thongma. Influence of ZnO seed layer on hydrothermal growth of ZnO nanorods and the photoresponse on ZnO nanorod-based photosensor. Master's Degree(Chemical Engineering). Thammasat University. Thammasat University Library. : Thammasat University, 2016.
Influence of ZnO seed layer on hydrothermal growth of ZnO nanorods and the photoresponse on ZnO nanorod-based photosensor
Name: Sattra Thongma
keyword:
Sputtering
LCSH:
Nanostructured materials
LCSH:
Zinc oxide
Abstract:
Because of its excellent properties, such as large exciton binding energy and wide band gap, ZnO nanostructures had more attracted to the optoelectronic industrial especially nanorod shape. One of the most promising electronic applications is photosensor. To improve device performance, vertically aligned ZnO nanorod, whose prerequisite is high-quality ZnO thin film seed, is required. In this work, high-quality ZnO thin film with the (002)/(100) ratio of 2287 can be obtained via radio frequency magnetron sputtering by using sputter power and working pressure of 50 W and 1.0×10-2 mbar, respectively. The ZnO nanorods grown on the thin film via hydrothermal method exhibited high vertically alignment with hexagonal pillar shape. Heterojunction p-Si/n-ZnO photosensor fabricated from the grown nanorods had the rectification ratio of about 9.6×103 at the voltage bias of +2 V. The photosensor exhibited stable photoresponse to both UV and visible (white light) lights. Sensitivity of the photosensor to UV and white light are 22.82 and 1.86, respectively. Rise time and decay time of the UV are 2.92 s and 0.27 s, respectively. Rise time and decay time of white light are 0.24 s and 0.31 s, respectively. An enhancment in white-light photoresponse after illuminated with UV for a certain time was also observed in this study
Thammasat University. Thammasat University Library
Address:
BANGKOK
Email:
preserv@tu.ac.th
Name: Nurak Grisdanurak
Role:
advisor
Name: Thitikorn Boonkoom
Role:
co-advisor
Created:
2016
Modified:
2564-08-16
Issued:
2021-08-16
วิทยานิพนธ์/Thesis
application/pdf
eng
DegreeName: Master of Engineering
Level: Master's Degree
Descipline: Chemical Engineering
Grantor: Thammasat University
©copyrights Thammasat University
RightsAccess:
ใช้เวลา
0.039811 วินาที
Sattra Thongma
| Title | Contributor | Type |
|---|---|---|
| Influence of ZnO seed layer on hydrothermal growth of ZnO nanorods and the photoresponse on ZnO nanorod-based photosensor
มหาวิทยาลัยธรรมศาสตร์ Sattra Thongma | Nurak Grisdanurak Thitikorn Boonkoom | วิทยานิพนธ์/Thesis |
Nurak Grisdanurak
Thitikorn Boonkoom
| Title | Creator | Type and Date Create |
|---|---|---|
| Influence of ZnO seed layer on hydrothermal growth of ZnO nanorods and the photoresponse on ZnO nanorod-based photosensor
มหาวิทยาลัยธรรมศาสตร์ Nurak Grisdanurak;Thitikorn Boonkoom | Sattra Thongma | วิทยานิพนธ์/Thesis |