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

Shao Sian Li, Ying Chiao Wang, Chin Ming Tsai, Cheng Yen Wen, Chia Hao Yu, Yu Pei Yang, Jou Chun Lin, Di Yan Wang, Chia Chun Chen, Yun Chieh Yeh, Chun Wei Chen

Research output: Contribution to journalArticle

11 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)14532-14537
Number of pages6
JournalNanoscale
Volume7
Issue number34
DOIs
Publication statusPublished - 2015 Sep 14
Externally publishedYes

    Fingerprint

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Li, S. S., Wang, Y. C., Tsai, C. M., Wen, C. Y., Yu, C. H., Yang, Y. P., Lin, J. C., Wang, D. Y., Chen, C. C., Yeh, Y. C., & Chen, C. W. (2015). Bulk intermixing-type perovskite CH3NH3PbI3/TiO2 nanorod hybrid solar cells. Nanoscale, 7(34), 14532-14537. https://doi.org/10.1039/c5nr04076k