journal article·2019-12-13

Reducing Defects in Perovskite Solar Cells with White Light Illumination-Assisted Synthesis

Huanqi Cao, Jinzhao Li, Zheng Dong, Jie Su, Jingjing Chang, Qing Zhao, Ziyi Li, Liying Yang, Shougen Yin

ACS Energy Letters· Volume 4· Issue 12
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Abstract

Defects lower the performance of perovskite solar cells by playing as recombination centers of carriers and migration channels of ions under illumination. Here we used various kinds of lights to assist the synthesis of perovskite in the sequential vapor deposition of perovskite. Without applying light, iodine accumulated on the film surface, and plenty of defects existed in the as-fabricated device. White light forced more iodine into the film bulk, removing excess iodine on the surface and leading to improved iodine homogenization, and consequently, most defects were annihilated. Devices with perovskite synthesized under white light showed improved efficiency and light stability compared to those prepared in the dark. Trication-based devices with over 20% efficiency under simulated solar light were successfully fabricated; on the contrary, control devices prepared in the dark showed only 18.3% efficiency. This finding suggests the possibility of kinetically controlling the synthesis of perovskite using low-intensity white illumination.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Chalcogenide Semiconductor Thin Films · Quantum Dots Synthesis And Properties

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

Affiliations

Key Laboratory of Display Materials and Photoelectric Devices (Ministry of Education), Tianjin Key Laboratory for Photoelectric Materials and Devices & National Demonstration Center for Experimental Function Materials Education, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China

State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, School of Microelectronics, Xidian University, 2 South Taibai Road, Xi’an 710071, China

State Key Laboratory for Mesoscopic Physics and Electron Microscopy Laboratory, School of Physics, Peking University, Beijing 100871, China

Collaborative Innovation Center of Quantum Matter, Beijing 100084, China

Funding

Natural Science Foundation of Tianjin City · National Natural Science Foundation of China · Scientific Developing Foundation of the Tianjin Education Commission

References (47)

Show source-provided references
1. 10.1039/C8SE90060D10.1039/C8SE90060D ↗
2. National Renewable Energy Laboratory. Best Research-Cell Efficiencies. https://www.nrel.gov/pv/cell-efficiency.html. (accessed Oct 2019).
3. 10.1021/acsenergylett.9b0139610.1021/acsenergylett.9b01396 ↗
4. 10.1038/nature2207210.1038/nature22072 ↗
5. 10.1038/lsa.2016.24310.1038/lsa.2016.243 ↗
6. 10.1039/C4SC03141E10.1039/C4SC03141E ↗
7. 10.1038/ncomms1168310.1038/ncomms11683 ↗
8. 10.1002/adma.20180323110.1002/adma.201803231 ↗
9. 10.1021/acsaem.8b0058710.1021/acsaem.8b00587 ↗
10. 10.1039/C5EE01265A10.1039/C5EE01265A ↗
11. 10.1021/acs.chemrev.8b0033610.1021/acs.chemrev.8b00336 ↗
12. 10.1038/s41563-018-0038-010.1038/s41563-018-0038-0 ↗
13. 10.1126/science.aau570110.1126/science.aau5701 ↗
14. 10.1039/C7TA01441D10.1039/C7TA01441D ↗
15. 10.1002/adma.20180533710.1002/adma.201805337 ↗
16. 10.1021/acs.accounts.5b0044410.1021/acs.accounts.5b00444 ↗
17. 10.7567/JJAP.52.04020210.7567/JJAP.52.040202 ↗
18. 10.1021/acsaem.8b0204210.1021/acsaem.8b02042 ↗
19. 10.7567/APEX.11.10550110.7567/APEX.11.105501 ↗
20. 10.1039/C6TA03180C10.1039/C6TA03180C ↗
21. 10.1002/aelm.20170015810.1002/aelm.201700158 ↗
22. 10.1002/adma.20170290510.1002/adma.201702905 ↗
23. 10.1002/adom.20170013910.1002/adom.201700139 ↗
24. 10.1039/C8TA03501F10.1039/C8TA03501F ↗
25. 10.1126/science.aah506510.1126/science.aah5065 ↗
26. 10.1039/C8TA06557H10.1039/C8TA06557H ↗
27. 10.1039/C5EE03874J10.1039/C5EE03874J ↗
28. 10.1126/science.aax329410.1126/science.aax3294 ↗
29. 10.1038/s41566-019-0398-210.1038/s41566-019-0398-2 ↗
30. 10.1002/adma.20180743510.1002/adma.201807435 ↗
31. 10.1021/acsami.9b0687310.1021/acsami.9b06873 ↗
32. 10.1021/acsami.8b1783910.1021/acsami.8b17839 ↗
33. 10.1021/acsenergylett.9b0172610.1021/acsenergylett.9b01726 ↗
34. 10.1038/srep3568510.1038/srep35685 ↗
35. 10.1038/nenergy.2016.14210.1038/nenergy.2016.142 ↗
36. 10.1039/C7EE00303J10.1039/C7EE00303J ↗
37. 10.1063/1.505216410.1063/1.5052164 ↗
38. 10.1021/acs.jpclett.5b0019910.1021/acs.jpclett.5b00199 ↗
39. 10.1002/adma.20190118310.1002/adma.201901183 ↗
40. 10.1039/C7CS00868F10.1039/C7CS00868F ↗
41. 10.1021/acsenergylett.8b0121210.1021/acsenergylett.8b01212 ↗
42. 10.1063/1.486477810.1063/1.4864778 ↗
43. 10.1021/acsenergylett.9b0024710.1021/acsenergylett.9b00247 ↗
44. 10.1021/acs.chemmater.5b0190910.1021/acs.chemmater.5b01909 ↗
45. 10.1021/acsnano.6b0791610.1021/acsnano.6b07916 ↗
46. 10.1039/C6EE01504B10.1039/C6EE01504B ↗
47. 10.1021/acs.jpclett.5b0130910.1021/acs.jpclett.5b01309 ↗