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Solid State Perovskite Solar Modules by Vacuum-vapor Assisted Sequential Deposition on Nd:YVO4 Laser Patterned Rutile TiO2 Nanorods

Azhar, Fakharuddin and Palma, Alessandro L. and Giacomo, Francesco Di and Casaluci, Simone and Matteocci, Fabio and Wali, Qamar and Rauf, Muhammad and Carlo, Aldo Di and Brown, Thomas M. and Rajan, Jose (2015) Solid State Perovskite Solar Modules by Vacuum-vapor Assisted Sequential Deposition on Nd:YVO4 Laser Patterned Rutile TiO2 Nanorods. Nanotechnology, 26. 494002 . ISSN 09574484

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Abstract

The past few years have witnessed remarkable progress in solution-processed methylammonium lead halide (CH3NH3PbX3,X - halide) perovskite solar cells (PSCs) with reported photoconversion efficiency (η) exceeding 20% in laboratory-scale devices and reaching up to 13% in their large area perovskite solar modules (PSMs). These devices mostly employ mesoporous TiO2 nanoparticles (NPs) as an electron transport layer (ETL) which provides a scaffold on which the perovskite semiconductor can grow. However, limitations exist which are due to trap-limited electron transport and non-complete pore filling. Herein, we have employed TiO2 nanorods (NRs), a material offering a two-fold higher electronic mobility and higher porefiling compared to their particle analogues, as an ETL. A crucial issue in NRs’ patterning over substrates is resolved by using precise Nd:YVO4 laser ablation, and a champion device with η∼8.1% is reported via a simple and low cost vacuum-vapor assisted sequential processing (VVASP) of a CH3NH3PbI3 film. Our experiments showed a successful demonstration of NRsbased PSMs via the V-VASP technique which can be applied to fabricate large area modules with a pin-hole free, smooth and dense perovskite layer which is required to build high efficiency devices.

Item Type: Article
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Faculty/Division: Faculty of Industrial Sciences And Technology
Depositing User: Prof. Dr. Jose Rajan
Date Deposited: 01 Apr 2016 01:29
Last Modified: 08 Feb 2018 01:18
URI: http://umpir.ump.edu.my/id/eprint/12564
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