Bulk intermixing-type perovskite CH3NH3PbI3/TiO2 nanorod hybrid solar cells. Issue 34 (11th August 2015)

• Record Type: Journal Article
• Authors: Li, Shao-Sian; Wang, Ying-Chiao; Tsai, Chin-Ming; Wen, Cheng-Yen; Yu, Chia-Hao; Yang, Yu-Pei; Lin, Jou-Chun; Wang, Di-Yan; Chen, Chia-Chun; Yeh, Yun-Chieh; Chen, Chun-Wei
• Is Part Of: Nanoscale. Volume 7:Issue 34(2015)
• Page Start: 14532
• Page End: 14537
• Publication Date: 2015-08-11
• Subjects: Nanoscience -- Periodicals; Nanotechnology -- Periodicals; 620.505
• DOI: 10.1039/c5nr04076k
• Languages: English
• ISSNs: 2040-3364

Abstract

Abstract : TiO2 nanorods from chemical synthesis are intermixed with CH3 NH3 PbI3 to replace the high-temperature sintered scaffold and form a new device structure of a bulk intermixing-type CH3 NH3 PbI3 /TiO2 nanorod hybrid solar cell. Abstract : To replace high-temperature sintered scaffold materials in conventional CH3 NH3 PbI3 -based solar cells, this study demonstrates a new device structure of a bulk intermixing (BI)-type CH3 NH3 PbI3 /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 CH3 NH3 PbI3 by ligand exchange treatment, a remarkable power conversion efficiency (PCE) of over 12% was achieved based on the simple BI-type CH3 NH3 PbI3 /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.