Enhanced Open-Circuit Voltage in Perovskite Solar Cells with Open-Cage [60]Fullerene Derivatives as Electron-Transporting Materials
by
Edison Castro 1,*,†
, Albert Artigas 2,†, Anna Pla-Quintana 2, Anna Roglans 2, Fang Liu 3, Frank Perez 1, Agustí Lledó 2, X.-Y. Zhu 3 and Luis Echegoyen 1,*
Edison Castro 1,*,†, Albert Artigas 2,†, Anna Pla-Quintana 2, Anna Roglans 2, Fang Liu 3, Frank Perez 1, Agustí Lledó 2, X.-Y. Zhu 3 and Luis Echegoyen 1,*
1
Department of Chemistry, University of Texas at El Paso El Paso, TX 79968, USA
2
Institut de Química Computacional i Catàlisi (IQCC), Department de Química, Universitat de Girona, 17003 Girona, Catalonia Spain
3
Department of Chemistry, Columbia University, New York, NY 10027, USA
*
Authors to whom correspondence should be addressed.
†
These authors contributed equally.
Materials 2019, 12(8), 1314; https://doi.org/10.3390/ma12081314
Received: 25 March 2019 / Revised: 15 April 2019 / Accepted: 18 April 2019 / Published: 23 April 2019
(This article belongs to the Special Issue Advances in Organic and Perovskite Solar Cells)
The synthesis, characterization, and incorporation of open-cage [60]fullerene derivatives as electron-transporting materials (ETMs) in perovskite solar cells (PSCs) with an inverted planar (p-i-n) structure is reported. Following optical and electrochemical characterization of the open-cage fullerenes 2a–c, p-i-n PSCs with a indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene)-polystyrene sulfonate (PEDOT:PSS)/perovskite/fullerene/Ag structure were prepared. The devices obtained from 2a–b exhibit competitive power conversion efficiencies (PCEs) and improved open-circuit voltage (Voc) values (>1.0 V) in comparison to a reference cell based on phenyl-C61-butyric-acid methyl-ester (PC61BM). These results are rationalized in terms of a) the higher passivation ability of the open-cage fullerenes with respect to the other fullerenes, and b) a good overlap between the highest occupied molecular orbital/lowest unoccupied molecular orbital (HOMO/LUMO) levels of 2a–b and the conduction band of the perovskite.
View Full-Text
▼
Show Figures
Figure 1
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
- Supplementary File 1:
Supplementary (PDF, 1755 KB)
MDPI and ACS Style
Castro, E.; Artigas, A.; Pla-Quintana, A.; Roglans, A.; Liu, F.; Perez, F.; Lledó, A.; Zhu, X.-Y.; Echegoyen, L. Enhanced Open-Circuit Voltage in Perovskite Solar Cells with Open-Cage [60]Fullerene Derivatives as Electron-Transporting Materials. Materials 2019, 12, 1314.
Show more citation formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.
