DataVXACS Energy LettersPaper
journal article·2019-02-08Open access

Thermally Stable Perovskite Solar Cells by Systematic Molecular Design of the Hole-Transport Layer

Tracy H. Schloemer, Timothy S. Gehan, Jeffrey A. Christians, Deborah G. Mitchell, Alex Dixon, Zhen Li, Kai Zhu, Joseph J. Berry, Joseph M. Luther, Alan Sellinger

ACS Energy Letters· Volume 4· Issue 2
Publisher pageOpen full text
Source abstract

Abstract

With metal halide perovskite solar cells (PSCs) now reaching device efficiencies >23%, more emphasis must now shift toward addressing their device stability. Recently, a triarylamine-based organic hole-transport material (HTM) doped with its oxidized salt analogue (EH44/EH44-ox) led to unencapsulated PSCs with high stability in ambient conditions. Here we report criteria for triarylamine-based organic HTMs formulated with stable oxidized salts as hole-transport layer (HTL) for increased PSC thermal stability. The triarylamine-based dopants must contain at least two para-electron-donating groups for radical cation stabilization to prevent impurity formation that leads to reduced PSC performance. The stability of unencapsulated devices prepared using these new HTMs stressed under constant load and illumination far outperforms that of both EH44/EH44-ox and Li+-doped spiro-OMeTAD controls at 50 °C. Furthermore, the ability to mix and match these dopants with a nonidentical small-molecule-based HTL matrix broadens the design scope for highly stable and cost-effective PSCs without sacrificing performance.
Source: openalex_inverted_index · Quality: baseline

Research context

Electronic materials

OpenAlex topics: Perovskite Materials and Applications · Conducting polymers and applications · Organic Light-Emitting Diodes Research

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

Affiliations

Materials Science Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States

Chemistry and Nanoscience Center, National Renewable Energy Laboratory, Golden, Colorado 80401, United States

Department of Engineering, Hope College, Holland, Michigan 49423, United States

Department of Chemistry, University of Denver, Denver, Colorado 80210, United States

Renewable and Sustainable Energy Institute (RASEI), University of Colorado Boulder, Boulder, Colorado 80303, United States

Laboratory of Organic Matter Physics, University of Nova Gorica, Vipavska 13, SI-5000 Nova Gorica, Republic of Slovenia

State Key Laboratory of Solidification Processing, Center for Nano Energy Materials, School of Materials Science and Engineering, Northwestern Polytechnical University and Shaanxi Joint Laboratory of Graphene (NPU), Xi’an 710072, People’s Republic of China

Funding

Solar Energy Technologies Office

References (52)

Show source-provided references
1. 10.1021/ja809598r10.1021/ja809598r ↗
2. NREL Photovoltaic Efficiency Chart. https://www.nrel.gov/pv/assets/images/efficiency-chart.png.
3. 10.1021/acsami.7b1874510.1021/acsami.7b18745 ↗
4. 10.1002/admi.20170062310.1002/admi.201700623 ↗
5. 10.1038/s41560-018-0200-610.1038/s41560-018-0200-6 ↗
6. 10.1039/C8EE00036K10.1039/C8EE00036K ↗
7. 10.1126/science.aao556110.1126/science.aao5561 ↗
8. 10.1039/c2cp44397j10.1039/c2cp44397j ↗
9. 10.1063/1.497778910.1063/1.4977789 ↗
10. 10.1021/cr050156n10.1021/cr050156n ↗
11. 10.1002/pssa.20122831010.1002/pssa.201228310 ↗
12. 10.1021/acs.chemrev.6b0032910.1021/acs.chemrev.6b00329 ↗
13. 10.1063/1.242455210.1063/1.2424552 ↗
14. 10.1021/jp306433g10.1021/jp306433g ↗
15. 10.1039/C7EE00358G10.1039/C7EE00358G ↗
16. 10.1021/cm504022q10.1021/cm504022q ↗
17. 10.1021/ja511132a10.1021/ja511132a ↗
18. 10.1021/ja504539w10.1021/ja504539w ↗
19. Snaith, H.; Leijtens, T.; Abate, A.; Sellinger, A. Organic Semiconductor Doping Process. U.S. Patent 9,818,944 B4, November 14, 2017.
20. 10.1021/acsami.5b1009310.1021/acsami.5b10093 ↗
21. 10.1038/s41560-017-0067-y10.1038/s41560-017-0067-y ↗
22. Hsieh, B.; Li, X. C.; Sellinger, A. Semiconducting Hole Injection Materials for Organic Light Emitting Devices. U.S. Patent 6,830,830, December 4, 2004.
23. 10.1002/chem.20180144110.1002/chem.201801441 ↗
24. 10.1007/s11426-017-9141-910.1007/s11426-017-9141-9 ↗
25. 10.1021/ja00967a00610.1021/ja00967a006 ↗
26. 10.1021/ja01017a00410.1021/ja01017a004 ↗
27. 10.1149/1.241092910.1149/1.2410929 ↗
28. 10.1149/1.213436510.1149/1.2134365 ↗
29. 10.1039/C6TA06987H10.1039/C6TA06987H ↗
30. 10.1021/acs.chemrev.6b0043210.1021/acs.chemrev.6b00432 ↗
31. 10.1016/j.nanoen.2017.02.02510.1016/j.nanoen.2017.02.025 ↗
32. 10.1002/apmc.1991.05185013210.1002/apmc.1991.051850132 ↗
33. 10.1039/a908130e10.1039/a908130e ↗
34. 10.1039/c3ee24138f10.1039/c3ee24138f ↗
35. 10.1021/acsenergylett.8b0092610.1021/acsenergylett.8b00926 ↗
36. 10.1002/cssc.20140267810.1002/cssc.201402678 ↗
37. 10.1021/am509038510.1021/am5090385 ↗
38. 10.1016/j.orgel.2018.04.01210.1016/j.orgel.2018.04.012 ↗
39. 10.1021/nn204296b10.1021/nn204296b ↗
40. 10.1002/aenm.20160107910.1002/aenm.201601079 ↗
41. 10.1039/C8TC02242A10.1039/C8TC02242A ↗
42. 10.1021/acs.chemmater.6b0177710.1021/acs.chemmater.6b01777 ↗
43. 10.1021/jacs.8b0980910.1021/jacs.8b09809 ↗
44. 10.1088/1361-6463/aacb6e10.1088/1361-6463/aacb6e ↗
45. 10.1021/acs.nanolett.6b0215810.1021/acs.nanolett.6b02158 ↗
46. 10.1039/C5EE03874J10.1039/C5EE03874J ↗
47. 10.1021/acsenergylett.7b0122110.1021/acsenergylett.7b01221 ↗
48. 10.1021/acsenergylett.6b0027010.1021/acsenergylett.6b00270 ↗
49. 10.1002/aenm.20170062310.1002/aenm.201700623 ↗
50. 10.1063/1.174342410.1063/1.1743424 ↗
51. 10.1016/0301-0104(95)00192-Q10.1016/0301-0104(95)00192-Q ↗
52. 10.1021/acs.jpclett.5b0028910.1021/acs.jpclett.5b00289 ↗