journal article·2016-07-08Open access

High Open-Circuit Voltage: Fabrication of Formamidinium Lead Bromide Perovskite Solar Cells Using Fluorene–Dithiophene Derivatives as Hole-Transporting Materials

Neha Arora, Simonetta Orlandi, M. Ibrahim Dar, Sadig Aghazada, Gwénolé Jacopin, Marco Cavazzini, Edoardo Mosconi, Paul Gratia, Filippo De Angelis, Gianluca Pozzi, Michael Graetzel, Mohammad Khaja Nazeeruddin

ACS Energy Letters· Volume 1· Issue 1

Abstract

Four different fluorene–dithiophene derivative-based hole-transporting materials (HTMs) ( SO7–10 ) have been synthesized via a facile route and were successfully used in the fabrication of formamidinium lead bromide perovskite solar cells. Detailed characterization of the new compounds was carried out through 1 H/ 13 C NMR spectroscopy, mass spectrometry, ultraviolet–visible and photoluminescence spectroscopy, and cyclic voltammetry. Under AM1.5 G illumination, the mesoscopic CH(NH 2 ) 2 PbBr 3 perovskite solar cell employing SO7 as the HTM displayed an outstanding photovoltage ( V oc ) of 1.5 V with an efficiency (η) of 7.1%. The photovoltaic performance is on par with the device using the state-of-the-art Spiro-OMeTAD as HTM, which delivered a V oc of 1.47 V and a maximum η of 6.9%. A density functional theory approach with GW simulations including spin–orbit coupling and electrochemical measurements revealed deeper highest occupied molecular orbital levels for newly synthesized fluorene–dithiophene derivatives, which eventually makes them promising HTMs for perovskite solar cells, especially when high photovoltage is desired.
Source: openalex_inverted_index · Quality: baseline

Research context

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

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

Affiliations

Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, CH-1951 Sion, Switzerland

Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, CNR-ISTM, via Golgi 19, I-20133 Milano, Italy

Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland

Laboratory of Quantum Optoelectronics, Institute of Physics, École Polytechnique Fédérale de Lausanne, Lausanne CH-1015, Switzerland

Computational Laboratory for Hybrid Organic Photovoltaics (CLHYO), CNR-ISTM, via Elce di Sotto 8, I-06123 Perugia, Italy

Funding

King Abdulaziz City for Science and Technology · Swiss confederation under Swiss Government Scholarship programme · European Community’s Seventh Frame- work Programme · QEERI

References (35)

Show source-provided references
1. 10.1039/C4EE00942H10.1039/C4EE00942H ↗
2. 10.1021/ja809598r10.1021/ja809598r ↗
3. 10.1039/c1nr10867k10.1039/c1nr10867k ↗
4. 10.1038/srep0059110.1038/srep00591 ↗
5. 10.1126/science.122860410.1126/science.1228604 ↗
6. 10.1038/nmat401410.1038/nmat4014 ↗
7. 10.1039/c3ee40343b10.1039/c3ee40343b ↗
8. 10.1021/ja411014k10.1021/ja411014k ↗
9. 10.1038/ncomms483410.1038/ncomms4834 ↗
10. 10.1039/C4EE03773A10.1039/C4EE03773A ↗
11. 10.1002/aenm.20140098010.1002/aenm.201400980 ↗
12. 10.1038/ncomms832610.1038/ncomms8326 ↗
13. 10.1126/science.125830710.1126/science.1258307 ↗
14. 10.1002/adma.20140314010.1002/adma.201403140 ↗
15. 10.1039/C4EE00762J10.1039/C4EE00762J ↗
16. 10.1021/jz402706q10.1021/jz402706q ↗
17. 10.1038/nenergy.2015.1710.1038/nenergy.2015.17 ↗
18. 10.1021/nl501299210.1021/nl5012992 ↗
19. 10.1021/jz501237m10.1021/jz501237m ↗
20. 10.1039/b006553f10.1039/b006553f ↗
21. 10.1039/b304377k10.1039/b304377k ↗
22. 10.1021/ol303121z10.1021/ol303121z ↗
23. 10.1016/j.tetlet.2015.01.17310.1016/j.tetlet.2015.01.173 ↗
24. 10.1021/ol402420w10.1021/ol402420w ↗
25. 10.1021/ja504539w10.1021/ja504539w ↗
26. 10.1002/adfm.20150497710.1002/adfm.201504977 ↗
27. 10.1038/ncomms858610.1038/ncomms8586 ↗
28. 10.1002/adma.20150312410.1002/adma.201503124 ↗
29. 10.1021/jp512936z10.1021/jp512936z ↗
30. 10.1038/nmat415010.1038/nmat4150 ↗
31. 10.1038/srep0446710.1038/srep04467 ↗
32. 10.1039/C4TA05149A10.1039/C4TA05149A ↗
33. 10.1021/nl400349b10.1021/nl400349b ↗
34. 10.1039/c4ee00168k10.1039/c4ee00168k ↗
35. 10.1021/jp207968b10.1021/jp207968b ↗