journal article·2019-06-14

Oligomeric Silica-Wrapped Perovskites Enable Synchronous Defect Passivation and Grain Stabilization for Efficient and Stable Perovskite Photovoltaics

Yang Bai, Yun Lin, Long Ren, Xiaolei Shi, Ekaterina Strounina, Yehao Deng, Qi Wang, Yanjun Fang, Xiaopeng Zheng, Yuze Lin, Zhi-Gang Chen, Yi Du, Lianzhou Wang, Jinsong Huang

ACS Energy Letters· Volume 4· Issue 6
Publisher page

Abstract

The intrinsic instability of hybrid perovskite materials induced by defect states arises as one major challenge hampering the commercialization of perovskite solar cells (PSCs). Here, we report a facile strategy of wrapping perovskite grains within an oligomeric silica (OS) matrix in a core-shell geometry, which can synchronously passivate the defects at surfaces and grain boundaries and stabilize the grains at the nanoscale. We observe a significant reduction of trap density and elongation of carrier lifetime in OS-wrapped perovskites, which yields an increased efficiency of 21.5% for p-i-n structured PSCs with a decent open-circuit voltage of 1.15 V and a fill factor of 0.81. This all-around nanoscale grain wrapping leads to remarkable improvement of the operational stability of PSCs, sustaining 80% of the efficiency after "burn-in" under full sunlight with UV for more than 5200 h. Our findings provide a new pathway towards efficient and stable PSCs.
Source: openalex_inverted_index · Quality: baseline

Research context

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties

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

Affiliations

Department of Mechanical and Materials Engineering, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States

Nanomaterials Centre, Australian Institute for Bioengineering and Nanotechnology and School of Chemical Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia

Department of Applied Physical Science, University of North Carolina, Chapel Hill, North Carolina 27514, United States

Institute for Superconducting and Electronic Materials (ISEM), Australian Institute for Innovative Materials (AIIM), University of Wollongong, Wollongong, New South Wales 2500, Australia

Materials Engineering, The University of Queensland, St Lucia, Queensland 4072, Australia

Centre for Advanced Imaging, The University of Queensland, Brisbane, Queensland 4072, Australia

Centre for Future Materials, University of Southern Queensland, Springfield, Queensland 4300, Australia

Funding

Office of Naval Research · U.S. Department of Energy · University of Queensland

References (57)

Show source-provided references
1. 10.1038/natrevmats.2017.4210.1038/natrevmats.2017.42 ↗
2. 10.1126/science.aan230110.1126/science.aan2301 ↗
3. 10.1126/science.aah555710.1126/science.aah5557 ↗
4. 10.1126/science.aai908110.1126/science.aai9081 ↗
5. 10.1038/nature2387710.1038/nature23877 ↗
6. 10.1021/ja511132a10.1021/ja511132a ↗
7. 10.1039/C6EE02941H10.1039/C6EE02941H ↗
8. 10.1039/C6EE00409A10.1039/C6EE00409A ↗
9. 10.1039/C6EE03014A10.1039/C6EE03014A ↗
10. 10.1038/ncomms1521810.1038/ncomms15218 ↗
11. 10.1038/nenergy.2015.1210.1038/nenergy.2015.12 ↗
12. 10.1039/C5TA00358J10.1039/C5TA00358J ↗
13. 10.1039/C6TA08783C10.1039/C6TA08783C ↗
14. 10.1038/ncomms1568410.1038/ncomms15684 ↗
15. 10.1126/science.aao556110.1126/science.aao5561 ↗
16. 10.1002/adfm.20170692310.1002/adfm.201706923 ↗
17. 10.1038/nnano.2015.23010.1038/nnano.2015.230 ↗
18. 10.1126/science.aam565510.1126/science.aam5655 ↗
19. 10.1038/ncomms1280610.1038/ncomms12806 ↗
20. 10.1126/science.aad584510.1126/science.aad5845 ↗
21. 10.1038/nenergy.2017.13510.1038/nenergy.2017.135 ↗
22. 10.1039/C6EE00612D10.1039/C6EE00612D ↗
23. 10.1002/adma.20170015910.1002/adma.201700159 ↗
24. 10.1038/nenergy.2015.110.1038/nenergy.2015.1 ↗
25. 10.1038/nenergy.2017.10210.1038/nenergy.2017.102 ↗
26. 10.1039/C7EE02415K10.1039/C7EE02415K ↗
27. 10.1038/ncomms1342210.1038/ncomms13422 ↗
28. 10.1063/1.494301910.1063/1.4943019 ↗
29. 10.1039/C7TC03733C10.1039/C7TC03733C ↗
30. 10.1039/C4TA05033A10.1039/C4TA05033A ↗
31. 10.1063/1.486477810.1063/1.4864778 ↗
32. 10.1038/ncomms678410.1038/ncomms6784 ↗
33. 10.1021/nn503647610.1021/nn5036476 ↗
34. 10.1126/sciadv.170010610.1126/sciadv.1700106 ↗
35. 10.1002/adma.20090126310.1002/adma.200901263 ↗
36. 10.1016/0021-9797(68)90272-510.1016/0021-9797(68)90272-5 ↗
37. 10.1002/adma.20040196010.1002/adma.200401960 ↗
38. 10.1021/jp057435z10.1021/jp057435z ↗
39. 10.1002/adma.20160308110.1002/adma.201603081 ↗
40. 10.1002/aenm.20180023210.1002/aenm.201800232 ↗
41. 10.1021/acs.jpcc.6b1086510.1021/acs.jpcc.6b10865 ↗
42. 10.1038/ncomms874710.1038/ncomms8747 ↗
43. 10.1002/adma.20160454510.1002/adma.201604545 ↗
44. 10.1002/aenm.20180120810.1002/aenm.201801208 ↗
45. 10.1063/1.36340110.1063/1.363401 ↗
46. 10.1002/adfm.20030515610.1002/adfm.200305156 ↗
47. 10.1038/srep1697710.1038/srep16977 ↗
48. 10.1002/adma.20160394010.1002/adma.201603940 ↗
49. 10.1002/adma.20110301010.1002/adma.201103010 ↗
50. 10.1002/aenm.20110013810.1002/aenm.201100138 ↗
51. 10.1021/acsenergylett.6b0019610.1021/acsenergylett.6b00196 ↗
52. 10.1021/jz500113x10.1021/jz500113x ↗
53. 10.1021/acs.accounts.5b0042010.1021/acs.accounts.5b00420 ↗
54. 10.1039/C7CS00868F10.1039/C7CS00868F ↗
55. 10.1038/s41560-017-0067-y10.1038/s41560-017-0067-y ↗
56. 10.1038/s41560-017-0060-510.1038/s41560-017-0060-5 ↗
57. 10.1038/s41467-018-07438-w10.1038/s41467-018-07438-w ↗