Charge Transfer Characterization of ALD-Grown TiO2Protective Layers in Silicon Photocathodes
Source abstract
Abstract
A critical parameter for the implementation of standard high-efficiency photovoltaic absorber materials for photoelectrochemical water splitting is its proper protection from chemical corrosion while remaining transparent and highly conductive. Atomic layer deposited (ALD) TiO 2 layers fulfill material requirements while conformally protecting the underlying photoabsorber. Nanoscale conductivity of ALD TiO 2 protective layers on silicon-based photocathodes has been analyzed, proving that the conduction path is through the columnar crystalline structure of TiO 2 . Deposition temperature has been explored from 100 to 300 °C, and a temperature threshold is found to be mandatory for an efficient charge transfer, as a consequence of layer crystallization between 100 and 200 °C. Completely crystallized TiO 2 is demonstrated to be mandatory for long-term stability, as seen in the 300 h continuous operation test.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Electrocatalysts for Energy Conversion · Advanced Photocatalysis Techniques · Copper-based nanomaterials and applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Catalonia Institute for Energy Research (IREC), Jardins de les Dones de Negre 1, Sant Adrià del Besòs, 08930 Barcelona, Spain
Universitat de Barcelona (UB), Martí i Franquès, 1, 08028 Barcelona, Spain
Repsol Technology Center, Agustín de Betancourt, s/n, Móstoles, 28935 Madrid, Spain
Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC and The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193 Barcelona, Spain
ICREA, Pg. Lluís Companys 23, 08010 Barcelona, Spain
Funding
European Regional Development Fund · Ministerio de Econom?a y Competitividad · Secretar?a de Estado de Investigaci?n, Desarrollo e Innovaci?n · Generalitat de Catalunya · Repsol S.A.
References (53)
Show source-provided references
1. 10.1073/pnas.060339510310.1073/pnas.0603395103 ↗
2. 10.1098/rsif.2012.098410.1098/rsif.2012.0984 ↗
3. James, B. D.; Baum, G. N.; Perez, J.; Baum, K. N.Technoeconomic Analysis of Photoelectrochemical (PEC) Hydrogen Production;Directed Technologies, Inc.:Arlington, VA, 2009; pp1–128.10.2172/1218403 ↗
4. 10.1038/238037a010.1038/238037a0 ↗
5. 10.1021/jp407167z10.1021/jp407167z ↗
6. 10.1016/j.apcatb.2016.02.04710.1016/j.apcatb.2016.02.047 ↗
7. 10.1021/acsami.5b1169810.1021/acsami.5b11698 ↗
8. 10.1021/am500948t10.1021/am500948t ↗
9. 10.1021/ja101655210.1021/ja1016552 ↗
10. 10.1021/jz100796610.1021/jz1007966 ↗
11. 10.1016/j.rser.2005.01.00910.1016/j.rser.2005.01.009 ↗
12. 10.1039/c1ee02444b10.1039/c1ee02444b ↗
13. 10.1021/cm900565a10.1021/cm900565a ↗
14. 10.1016/j.solener.2004.06.00610.1016/j.solener.2004.06.006 ↗
15. 10.1002/aenm.20150107010.1002/aenm.201501070 ↗
16. 10.1039/c3ee40453f10.1039/c3ee40453f ↗
17. 10.1039/c1ee01488a10.1039/c1ee01488a ↗
18. 10.1021/ja108801m10.1021/ja108801m ↗
19. 10.1021/ja309523t10.1021/ja309523t ↗
20. 10.1016/j.ijhydene.2010.02.13310.1016/j.ijhydene.2010.02.133 ↗
21. 10.1021/cm402151810.1021/cm4021518 ↗
22. 10.1016/j.solmat.2015.10.02010.1016/j.solmat.2015.10.020 ↗
23. Bhola S. M. · Int. J. Electrochem. Sci. · 2013 · 8 · 707510.1016/S1452-3981(23)14830-9 ↗
24. 10.1021/am506999p10.1021/am506999p ↗
25. 10.1039/c3ta12309j10.1039/c3ta12309j ↗
26. 10.1063/1.480344610.1063/1.4803446 ↗
27. 10.1038/nmat304710.1038/nmat3047 ↗
28. 10.1126/science.125142810.1126/science.1251428 ↗
29. 10.1002/cctc.20140253210.1002/cctc.201402532 ↗
30. 10.1021/acsami.5b0037910.1021/acsami.5b00379 ↗
31. 10.1039/c3ee41178h10.1039/c3ee41178h ↗
32. 10.1021/acs.jpcc.5b0440710.1021/acs.jpcc.5b04407 ↗
33. 10.1039/c3ra45966g10.1039/c3ra45966g ↗
34. 10.1038/nmat301710.1038/nmat3017 ↗
35. 10.1039/C3CS60370A10.1039/C3CS60370A ↗
36. 10.1016/j.solmat.2016.01.03110.1016/j.solmat.2016.01.031 ↗
37. 10.1063/1.475790710.1063/1.4757907 ↗
38. 10.1016/0022-0248(94)00874-410.1016/0022-0248(94)00874-4 ↗
39. 10.1063/1.180752010.1063/1.1807520 ↗
40. 10.1126/science.aad442410.1126/science.aad4424 ↗
41. 10.1038/nmat445110.1038/nmat4451 ↗
42. 10.1002/cssc.20160077710.1002/cssc.201600777 ↗
43. 10.1021/cm303703r10.1021/cm303703r ↗
44. 10.1117/12.72649210.1117/12.726492 ↗
45. 10.1166/jnn.2011.506010.1166/jnn.2011.5060 ↗
46. 10.1021/acsami.6b0421310.1021/acsami.6b04213 ↗
47. 10.1063/1.493562210.1063/1.4935622 ↗
48. 10.1063/1.484031610.1063/1.4840316 ↗
49. 10.1063/1.233662110.1063/1.2336621 ↗
50. 10.1063/1.200114610.1063/1.2001146 ↗
51. 10.1016/j.tsf.2014.09.04110.1016/j.tsf.2014.09.041 ↗
52. 10.1155/2014/57816810.1155/2014/578168 ↗
53. 10.1149/1.348310610.1149/1.3483106 ↗