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Issue 34, 2015
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Bulk intermixing-type perovskite CH3NH3PbI3/TiO2 nanorod hybrid solar cells

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Abstract

To replace high-temperature sintered scaffold materials in conventional CH3NH3PbI3-based solar cells, this study demonstrates a new device structure of a bulk intermixing (BI)-type CH3NH3PbI3/TiO2 nanorod (NR) hybrid solar cell, where dispersed TiO2 NRs from chemical synthesis are intermixed with the perovskite absorbing layer to form a BI-type perovskite/TiO2 NR hybrid for device fabrication. Through interface engineering between the TiO2 NR surface and the photoactive perovskite material of CH3NH3PbI3 by ligand exchange treatment, a remarkable power conversion efficiency (PCE) of over 12% was achieved based on the simple BI-type CH3NH3PbI3/TiO2 NR hybrid device structure. The proposed hybrids not only provide great flexibility for deposition on various substrates through spin coating at low temperatures but also enable layer-by-layer deposition for the future development of perovskite-based multi-junction solar cells.

Graphical abstract: Bulk intermixing-type perovskite CH3NH3PbI3/TiO2 nanorod hybrid solar cells

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Supplementary files

Article information


Submitted
19 Jun 2015
Accepted
26 Jul 2015
First published
29 Jul 2015

Nanoscale, 2015,7, 14532-14537
Article type
Paper

Bulk intermixing-type perovskite CH3NH3PbI3/TiO2 nanorod hybrid solar cells

S. Li, Y. Wang, C. Tsai, C. Wen, C. Yu, Y. Yang, J. Lin, D. Wang, C. Chen, Y. Yeh and C. Chen, Nanoscale, 2015, 7, 14532
DOI: 10.1039/C5NR04076K

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