Mesostructured Fullerene Electrodes for Highly Efficient n–i–p Perovskite Solar Cells
Type
ArticleAuthors
Zhong, YufeiMunir, Rahim

Albalawi, Ahmed
Sheikh, Arif D.

Yu, Liyang
Tang, Ming-Chun
Hu, Hanlin

Laquai, Frédéric

Amassian, Aram

KAUST Department
Ali I. Al-Naimi Petroleum Engineering Research Center (ANPERC)KAUST Solar Center (KSC)
Material Science and Engineering Program
Organic Electronics and Photovoltaics Group
Physical Science and Engineering (PSE) Division
Date
2016-10-27Online Publication Date
2016-10-27Print Publication Date
2016-11-11Permanent link to this record
http://hdl.handle.net/10754/622751
Metadata
Show full item recordAbstract
Electron-transporting layers in today's stateof-the-art n-i-p organohalide perovskite solar cells are almost exclusively made of metal oxides. Here, we demonstrate a novel mesostructured fullerene-based electron-transporting material (ETM) that is crystalline, hydrophobic, and cross-linked, rendering it solvent-and heat resistant for subsequent perovskite solar cell fabrication The fullerene ETM is shown to enhance the structural and electronic properties of the CH3NH3PbI3 layer grown atop, reducing its Urbach energy from similar to 26 to 21 meV, while also increasing crystallite size and improving texture. The resulting mesostructured n-i-p solar cells achieve reduced recombination, improved device-to-device variation, reduced hysteresis, and a power conversion efficiency above 15%, surpassing the performance of similar devices prepared using mesoporous TiO2 and well above the performance of planar heterojunction devices on amorphous or crystalline [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM). This work is the first demonstration of a viable, hydrophobic, and high-performance mesostructured electron-accepting contact to work effectively in n-i-p perovskite solar cells.Citation
Zhong Y, Munir R, Balawi AH, Sheikh AD, Yu L, et al. (2016) Mesostructured Fullerene Electrodes for Highly Efficient n–i–p Perovskite Solar Cells. ACS Energy Letters 1: 1049–1056. Available: http://dx.doi.org/10.1021/acsenergylett.6b00455.Sponsors
This work was supported by the King Abdullah University of Science and Technology, A.H. Balawi and F. Laquai thank K. Vandewal and M. Baier for contributing to the setup for photothermal deflection spectroscopy (PDS). Part of this work was performed at D-line at the Cornell High Energy Synchrotron Source (CHESS) at Cornell University. CHESS is supported by NSF and NIH/NIGMS via NSF Award DMR-1332208. Dr. Detlef-M. Smilgies and Dr. Ruipeng Li from CHESS are thanked for their assistance with beamline setup for the GIWAXS measurements.Publisher
American Chemical Society (ACS)Journal
ACS Energy LettersAdditional Links
pubs.acs.org/doi/abs/10.1021/acsenergylett.6b00455ae974a485f413a2113503eed53cd6c53
10.1021/acsenergylett.6b00455