Ordered GaN Nanorod Arrays for Self-Powered Photoelectrochemical Ultraviolet Photodetectors
Source abstract
Abstract
Self-powered ultraviolet (UV) photodetectors have great application prospects in the fields of UV astronomy, environmental monitoring, and space communication. In particular, the emerging photoelectrochemical photodetectors (PEC PDs) without external bias, high sensitivity, and environmental sensitivity have attracted extensive attention. Herein, self-powered PEC PDs were designed and constructed by using highly ordered GaN nanorod arrays (NRAs) as photoelectrodes. Without external bias, PEC PDs with NRA structures exhibit a high peak responsivity of 6.04 mA/W and a detectivity of 5.14 × 1010 Jones, which are 12 and 5.1 times higher, respectively, than those of the planar device. The large solid–liquid interface of the nanorod structure will lead to an improved built-in electrical field to promote carrier collection and rapid directional transmission, which can enhance the generation and separation of photogenerated carriers. Moreover, an optimized nanoarray will increase the UV detection effect significantly, which provides instruction for the design and fabrication of high-performance self-powered PEC PDs in the future.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Ga2O3 and related materials · ZnO doping and properties · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Key Laboratory of Advanced Photonic and Electronic Materials, School of Electronic Science and Engineering, Nanjing University, Nanjing 210023, People’s Republic of China
College of Electronic and Optical Engineering and College of Flexible Electronics, Department of Electronic Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, People’s Republic of China
Funding
National Natural Science Foundation of China · Fundamental Research Funds for the Central Universities · the National Key Research and Development Program of China · Science Foundation of Jiangsu Province · Leading-edge Technology Program of Jiangsu Natural Science Foundation
References (59)
Show source-provided references
1. 10.1016/j.nanoen.2022.10694510.1016/j.nanoen.2022.106945 ↗
2. 10.1021/acsomega.0c0123910.1021/acsomega.0c01239 ↗
3. 10.1186/s11671-020-3271-910.1186/s11671-020-3271-9 ↗
4. 10.1021/acsami.1c1809910.1021/acsami.1c18099 ↗
5. 10.1016/j.scienta.2019.10911010.1016/j.scienta.2019.109110 ↗
6. 10.1021/acsami.7b1881510.1021/acsami.7b18815 ↗
7. 10.1021/acsami.9b2265110.1021/acsami.9b22651 ↗
8. 10.1007/s10854-020-03280-310.1007/s10854-020-03280-3 ↗
9. 10.1515/nanoph-2019-056210.1515/nanoph-2019-0562 ↗
10. 10.1021/acsanm.0c0153910.1021/acsanm.0c01539 ↗
11. 10.1016/j.apsusc.2018.01.28710.1016/j.apsusc.2018.01.287 ↗
12. 10.1002/aelm.20170003610.1002/aelm.201700036 ↗
13. 10.1021/acs.nanolett.6b0080610.1021/acs.nanolett.6b00806 ↗
14. 10.1021/acsami.6b1490710.1021/acsami.6b14907 ↗
15. 10.1021/acsami.0c1424610.1021/acsami.0c14246 ↗
16. 10.1016/j.jallcom.2018.08.14910.1016/j.jallcom.2018.08.149 ↗
17. 10.1016/j.cap.2019.05.00810.1016/j.cap.2019.05.008 ↗
18. 10.1016/j.snb.2018.03.01810.1016/j.snb.2018.03.018 ↗
19. 10.1063/1.348890510.1063/1.3488905 ↗
20. 10.1063/1.328003210.1063/1.3280032 ↗
21. 10.1364/PRJ.7.000B6610.1364/PRJ.7.000B66 ↗
22. 10.1515/nanoph-2019-015810.1515/nanoph-2019-0158 ↗
23. 10.1088/0957-4484/27/1/01530110.1088/0957-4484/27/1/015301 ↗
24. 10.1038/srep2021810.1038/srep20218 ↗
25. 10.1016/j.mssp.2017.12.01910.1016/j.mssp.2017.12.019 ↗
26. 10.1016/j.ijleo.2021.16769110.1016/j.ijleo.2021.167691 ↗
27. 10.1021/acsnano.5b0721710.1021/acsnano.5b07217 ↗
28. 10.1364/OL.42872110.1364/OL.428721 ↗
29. 10.1109/LPT.2021.305217110.1109/LPT.2021.3052171 ↗
30. 10.1021/acsnano.1c1018110.1021/acsnano.1c10181 ↗
31. 10.1016/j.apsusc.2018.04.22510.1016/j.apsusc.2018.04.225 ↗
32. 10.1038/s41928-021-00640-710.1038/s41928-021-00640-7 ↗
33. 10.1021/acs.nanolett.0c0335710.1021/acs.nanolett.0c03357 ↗
34. 10.1002/adfm.20210300710.1002/adfm.202103007 ↗
35. 10.1007/s10854-007-9295-410.1007/s10854-007-9295-4 ↗
36. 10.1016/j.tca.2019.17842810.1016/j.tca.2019.178428 ↗
37. 10.3390/s9090744510.3390/s90907445 ↗
38. 10.1063/5.004656010.1063/5.0046560 ↗
39. 10.1002/adom.20210283910.1002/adom.202102839 ↗
40. 10.1021/acsanm.1c0323910.1021/acsanm.1c03239 ↗
41. 10.1021/acsami.5b0838210.1021/acsami.5b08382 ↗
42. 10.1186/s11671-018-2672-510.1186/s11671-018-2672-5 ↗
43. 10.1002/adom.20190034010.1002/adom.201900340 ↗
44. 10.1038/s41598-021-90450-w10.1038/s41598-021-90450-w ↗
45. 10.1002/adfm.20220160410.1002/adfm.202201604 ↗
46. 10.1021/acsami.9b0094010.1021/acsami.9b00940 ↗
47. 10.1002/smll.20150338810.1002/smll.201503388 ↗
48. 10.1039/C7NR03547K10.1039/C7NR03547K ↗
49. 10.1016/j.snb.2011.03.08010.1016/j.snb.2011.03.080 ↗
50. 10.1021/acsanm.9b0052710.1021/acsanm.9b00527 ↗
51. 10.1021/acsanm.9b0099210.1021/acsanm.9b00992 ↗
52. 10.1016/j.jallcom.2017.08.03510.1016/j.jallcom.2017.08.035 ↗
53. 10.1186/1556-276X-8-41510.1186/1556-276X-8-415 ↗
54. 10.1186/1556-276X-8-18810.1186/1556-276X-8-188 ↗
55. 10.1016/j.apsusc.2020.14838010.1016/j.apsusc.2020.148380 ↗
56. 10.1039/C7NR09046C10.1039/C7NR09046C ↗
57. 10.1021/acsphotonics.7b0121110.1021/acsphotonics.7b01211 ↗
58. 10.52396/JUSTC-2021-020510.52396/JUSTC-2021-0205 ↗
59. 10.1002/adfm.20220252410.1002/adfm.202202524 ↗