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Issue 114, 2015
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Interfacial engineering by using self-assembled monolayer in mesoporous perovskite solar cell

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Abstract

A self-assembled monolayer of 4-aminobenzoic acid (PABA) is prepared on the top of a mesoporous TiO2 electron transfer layer. Through the full characterization of PABA-SAM modified TiO2 and the above-prepared perovskite layer with Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), contact angle and photoluminescence, it was clear that the introduction of the SAM improved the interfacial compatibility and therefore the quality of the perovskite, thus leading to fewer traps, better carrier transport and good energy matching between the TiO2 layer and the perovskite layer. The power conversion efficiency (PCE) of the perovskite device with interfacial modification was enhanced to 10.58% compared with that of the device without SAM.

Graphical abstract: Interfacial engineering by using self-assembled monolayer in mesoporous perovskite solar cell

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Supplementary files

Article information


Submitted
24 Aug 2015
Accepted
26 Oct 2015
First published
03 Nov 2015

RSC Adv., 2015,5, 94290-94295
Article type
Paper

Interfacial engineering by using self-assembled monolayer in mesoporous perovskite solar cell

B. Li, Y. Chen, Z. Liang, D. Gao and W. Huang, RSC Adv., 2015, 5, 94290
DOI: 10.1039/C5RA17129F

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