DataVXACS Applied Materials & InterfacesPaper
journal article·2017-12-20Open access

Engineering the Photoresponse of InAs Nanowires

Jack A. Alexander-Webber, Catherine K. Groschner, Abhay A. Sagade, Gregory Tainter, M. Fernando Gonzalez-Zalba, Riccardo Di Pietro, Jennifer Wong-Leung, H. Hoe Tan, Chennupati Jagadish, Stephan Hofmann, Hannah J. Joyce

ACS Applied Materials & Interfaces· Volume 9· Issue 50
Publisher pageOpen full text
Source abstract

Abstract

We report on individual-InAs nanowire optoelectronic devices which can be tailored to exhibit either negative or positive photoconductivity (NPC or PPC). The NPC photoresponse time and magnitude is found to be highly tunable by varying the nanowire diameter under controlled growth conditions. Using hysteresis characterization, we decouple the observed photoexcitation-induced hot electron trapping from conventional electric field-induced trapping to gain a fundamental insight into the interface trap states responsible for NPC. Furthermore, we demonstrate surface passivation without chemical etching which both enhances the field-effect mobility of the nanowires by approximately an order of magnitude and effectively eliminates the hot carrier trapping found to be responsible for NPC, thus restoring an "intrinsic" positive photoresponse. This opens pathways toward engineering semiconductor nanowires for novel optical-memory and photodetector applications.
Source: openalex_inverted_index · Quality: baseline

Research context

NanomaterialsElectronic materials

OpenAlex topics: Nanowire Synthesis and Applications · Semiconductor materials and devices · Electronic and Structural Properties of Oxides

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Engineering, University of Cambridge, 9 JJ Thomson Avenue, Cambridge CB3 0FA, United Kingdom

SRM Research Institute, Department of Physics & Nanotechnology, SRM University, Kattankulathur 603 203, India

Hitachi Cambridge Laboratory, JJ Thomson Avenue, Cambridge CB3 0HE, United Kingdom

Department of Electronic Materials Engineering, Research School of Physics and Engineering, The Australian National University, Canberra, ACT 2601, Australia

Funding

Engineering and Physical Sciences Research Council · Australian Research Council · Royal Commission for the Exhibition of 1851 · Winston Churchill Foundation of the United States · Churchill College, University of Cambridge · H2020 Excellent Science

References (52)

Show source-provided references
1. 10.1088/0268-1242/25/2/02400410.1088/0268-1242/25/2/024004 ↗
2. 10.1016/j.pquantelec.2011.03.00210.1016/j.pquantelec.2011.03.002 ↗
3. 10.1109/JSTQE.2010.207762110.1109/JSTQE.2010.2077621 ↗
4. 10.1109/JSTQE.2010.209350810.1109/JSTQE.2010.2093508 ↗
5. 10.1002/smll.20060037910.1002/smll.200600379 ↗
6. 10.1021/nn500201g10.1021/nn500201g ↗
7. 10.1088/1361-6463/aa5ab310.1088/1361-6463/aa5ab3 ↗
8. 10.1021/acs.nanolett.6b0220510.1021/acs.nanolett.6b02205 ↗
9. 10.1038/nphys247910.1038/nphys2479 ↗
10. 10.1103/PhysRevLett.76.362610.1103/PhysRevLett.76.3626 ↗
11. 10.1116/1.274841010.1116/1.2748410 ↗
12. 10.1021/nl300015w10.1021/nl300015w ↗
13. 10.1039/C5NR03608A10.1039/C5NR03608A ↗
14. 10.1088/0957-4484/18/10/10530710.1088/0957-4484/18/10/105307 ↗
15. 10.1002/adma.20140366410.1002/adma.201403664 ↗
16. 10.1063/1.493875210.1063/1.4938752 ↗
17. 10.1021/acs.nanolett.5b0196210.1021/acs.nanolett.5b01962 ↗
18. 10.1039/C5CP06139C10.1039/C5CP06139C ↗
19. 10.1021/acs.nanolett.6b0286010.1021/acs.nanolett.6b02860 ↗
20. 10.1021/acsami.6b1377510.1021/acsami.6b13775 ↗
21. 10.1038/nnano.2013.20610.1038/nnano.2013.206 ↗
22. 10.1103/PhysRevLett.102.10680510.1103/PhysRevLett.102.106805 ↗
23. 10.1021/nl302682810.1021/nl3026828 ↗
24. 10.1063/1.272876210.1063/1.2728762 ↗
25. 10.1088/2053-1583/4/1/01100810.1088/2053-1583/4/1/011008 ↗
26. 10.1021/jp074692q10.1021/jp074692q ↗
27. 10.1038/s41699-017-0038-y10.1038/s41699-017-0038-y ↗
28. 10.1063/1.9245910.1063/1.92459 ↗
29. 10.1021/nl803154m10.1021/nl803154m ↗
30. 10.1063/1.233785310.1063/1.2337853 ↗
31. 10.1021/nl901633610.1021/nl9016336 ↗
32. 10.1088/0268-1242/25/2/02401110.1088/0268-1242/25/2/024011 ↗
33. 10.1021/nl503043p10.1021/nl503043p ↗
34. 10.1063/1.368496410.1063/1.3684964 ↗
35. 10.1016/S0039-6028(02)02411-110.1016/S0039-6028(02)02411-1 ↗
36. 10.1063/1.214606010.1063/1.2146060 ↗
37. 10.1063/1.288395610.1063/1.2883956 ↗
38. 10.1063/1.314872310.1063/1.3148723 ↗
39. 10.1063/1.349577610.1063/1.3495776 ↗
40. 10.1063/1.366439910.1063/1.3664399 ↗
41. 10.1016/j.cossms.2011.04.00510.1016/j.cossms.2011.04.005 ↗
42. 10.1021/jp206566y10.1021/jp206566y ↗
43. 10.1109/LED.2012.219013210.1109/LED.2012.2190132 ↗
44. 10.1063/1.491383210.1063/1.4913832 ↗
45. 10.1039/b405776g10.1039/b405776g ↗
46. 10.1063/1.355661910.1063/1.3556619 ↗
47. 10.1016/j.apsusc.2013.07.14010.1016/j.apsusc.2013.07.140 ↗
48. 10.1063/1.222191210.1063/1.2221912 ↗
49. 10.1063/1.194072710.1063/1.1940727 ↗
50. 10.1021/nl902611f10.1021/nl902611f ↗
51. 10.1088/1361-6528/aa8e2310.1088/1361-6528/aa8e23 ↗
52. 10.1021/nl903688v10.1021/nl903688v ↗