Polarization Alignment in Polycrystalline BiFeO3 Photoelectrodes for Tunable Band Bending
Source abstract
Abstract
Polarization in a semiconductor can modulate the band bending via the depolarization electric field ( E dP ), subsequently tuning the charge separation and transfer (CST) process in photoelectrodes. However, the random orientation of dipole moments in many polycrystalline semiconductor photoelectrodes leads to negligible polarization effect. How to effectively align the dipole moments in polycrystalline photoelectrodes into the same direction to maximize the polarization is still to be developed. Herein, we report that the dipole moments in a ferroelectric BiFeO 3 photoelectrode can be controlled under external poling, resulting in a tunable CST efficiency. A negative bias of −40 voltage (V) poling to the photoelectrode leads to an over 110% increase of the CST efficiency, while poling at +40 V, the CST efficiency is reduced to only 41% of the original value. Furthermore, a nearly linear relationship between the external poling voltage and surface potential is discovered. The findings here provide an effective method in tuning the band bending and charge transfer of the emerging ferroelectricity driven solar energy conversion.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Multiferroics and related materials · Dielectric properties of ceramics · Advanced Photocatalysis Techniques
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Nanomaterials Centre, School of Chemical Engineering, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, St Lucia, Queensland 4072, Australia
Research School of Chemistry, The Australian National University, Canberra, ACT 2601, Australia
WA School of Mines: Minerals, Energy and Chemical Engineering, Curtin University, Perth, Western Australia 6102, Australia
Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, 72 Wenhua Road, Shenyang 110016, China
School of Materials Science and Engineering, University of Science and Technology of China, 72 Wenhua Road, Shenyang 110016, China
Funding
National Key Research and Development Program of China · Australian Research Council · Australian Institute of Nuclear Science and Engineering · National Natural Science Foundation of China · University of Queensland
References (64)
Show source-provided references
1. 10.1016/B978-0-08-102802-5.00002-910.1016/B978-0-08-102802-5.00002-9 ↗
2. 10.1016/S1872-2067(17)62998-X10.1016/S1872-2067(17)62998-X ↗
3. 10.1002/solr.20190050910.1002/solr.201900509 ↗
4. 10.1002/adma.20170464910.1002/adma.201704649 ↗
5. 10.1021/ic502675a10.1021/ic502675a ↗
6. 10.1016/S1872-2067(18)63104-310.1016/S1872-2067(18)63104-3 ↗
7. 10.1021/acscatal.9b0324610.1021/acscatal.9b03246 ↗
8. 10.1002/eom2.1207510.1002/eom2.12075 ↗
9. 10.1002/smsc.20200007410.1002/smsc.202000074 ↗
10. 10.1039/C8CS00320C10.1039/C8CS00320C ↗
11. 10.1002/adma.20190651310.1002/adma.201906513 ↗
12. 10.1109/T-ED.1959.1457110.1109/T-ED.1959.14571 ↗
13. 10.1038/s41467-020-15993-410.1038/s41467-020-15993-4 ↗
14. 10.1002/anie.20190136110.1002/anie.201901361 ↗
15. 10.1002/adma.20120310110.1002/adma.201203101 ↗
16. 10.1039/D1TA02699B10.1039/D1TA02699B ↗
17. 10.1002/adma.20170700710.1002/adma.201707007 ↗
18. 10.1002/adma.20180015410.1002/adma.201800154 ↗
19. 10.1038/nphoton.2016.14310.1038/nphoton.2016.143 ↗
20. 10.1021/acsami.9b0670410.1021/acsami.9b06704 ↗
21. 10.1039/D0NH00219D10.1039/D0NH00219D ↗
22. 10.1038/ncomms383510.1038/ncomms3835 ↗
23. 10.1126/science.aaa644210.1126/science.aaa6442 ↗
24. 10.1002/adma.20160123810.1002/adma.201601238 ↗
25. 10.1016/j.joule.2018.03.00610.1016/j.joule.2018.03.006 ↗
26. 10.1021/jacs.2c0817710.1021/jacs.2c08177 ↗
27. 10.1016/j.nanoen.2021.10685210.1016/j.nanoen.2021.106852 ↗
28. 10.1021/acs.jpcc.0c0136110.1021/acs.jpcc.0c01361 ↗
29. 10.1038/nnano.2009.45110.1038/nnano.2009.451 ↗
30. 10.1021/acsaem.1c0401910.1021/acsaem.1c04019 ↗
31. 10.1002/adfm.20211118010.1002/adfm.202111180 ↗
32. 10.1002/anie.20140604410.1002/anie.201406044 ↗
33. 10.1002/adma.20170143210.1002/adma.201701432 ↗
34. 10.1021/acsami.9b1531710.1021/acsami.9b15317 ↗
35. 10.1021/acs.chemmater.0c0054510.1021/acs.chemmater.0c00545 ↗
36. 10.1039/C0EE00570C10.1039/C0EE00570C ↗
37. 10.1002/adma.20210677610.1002/adma.202106776 ↗
38. 10.1002/anie.20130626310.1002/anie.201306263 ↗
39. 10.1002/adfm.20221019410.1002/adfm.202210194 ↗
40. 10.1021/acs.nanolett.2c0004710.1021/acs.nanolett.2c00047 ↗
41. 10.3390/coatings1005043810.3390/coatings10050438 ↗
42. 10.1039/C7TC03371K10.1039/C7TC03371K ↗
43. 10.1038/srep4165710.1038/srep41657 ↗
44. 10.1002/advs.20200399310.1002/advs.202003993 ↗
45. 10.1038/s41467-021-24882-310.1038/s41467-021-24882-3 ↗
46. 10.1002/aelm.20150028810.1002/aelm.201500288 ↗
47. 10.1016/j.cej.2021.13168110.1016/j.cej.2021.131681 ↗
48. 10.1038/ncomms319510.1038/ncomms3195 ↗
49. 10.1002/anie.20211042910.1002/anie.202110429 ↗
50. 10.1149/1.209692710.1149/1.2096927 ↗
51. 10.1039/C4CC04999C10.1039/C4CC04999C ↗
52. 10.1038/s41467-022-32002-y10.1038/s41467-022-32002-y ↗
53. 10.1021/cr300062610.1021/cr3000626 ↗
54. 10.1002/anie.20150413510.1002/anie.201504135 ↗
55. 10.1016/0038-1101(91)90166-V10.1016/0038-1101(91)90166-V ↗
56. 10.1021/j100070a00210.1021/j100070a002 ↗
57. 10.1021/jacs.5b0554410.1021/jacs.5b05544 ↗
58. 10.1039/C8CP04021D10.1039/C8CP04021D ↗
59. 10.1002/smll.20160345710.1002/smll.201603457 ↗
60. 10.1002/ange.20140604410.1002/ange.201406044 ↗
61. 10.1039/D0TA00955E10.1039/D0TA00955E ↗
62. 10.1021/acs.nanolett.2c0004710.1021/acs.nanolett.2c00047 ↗
63. Bottcher C. · 1973
64. 10.1063/1.493974710.1063/1.4939747 ↗