The past few years have witnessed remarkable progress in solution-processed methylammonium lead halide (CH 3 NH 3 PbX 3 , 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 TiO 2 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 TiO 2 nanorods (NRs), a material offering a two-fold higher electronic mobility and higher pore-filing compared to their particle analogues, as an ETL. A crucial issue in NRs' patterning over substrates is resolved by using precise Nd:YVO 4 laser ablation, and a champion device with η ∼ 8.1% is reported via a simple and low cost vacuum-vapor assisted sequential processing (V-VASP) of a CH 3 NH 3 PbI 3 film. Our experiments showed a successful demonstration of NRs-based 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.

Fakharuddin, A., Palma, A.l., Giacomo, F.d., Casaluci, S., Matteocci, F., Wali, Q., et al. (2015). Solid state perovskite solar modules by vacuum-vapor assisted sequential deposition on Nd:YVO 4 laser patterned rutile TiO 2 nanorods. NANOTECHNOLOGY, 26(49), 494002 [10.1088/0957-4484/26/49/494002].

Solid state perovskite solar modules by vacuum-vapor assisted sequential deposition on Nd:YVO 4 laser patterned rutile TiO 2 nanorods

Palma, Alessandro L.;Giacomo, Francesco Di;CASALUCI, SIMONE;Matteocci, Fabio;Carlo, Aldo Di;Brown, Thomas M.
;
2015

Abstract

The past few years have witnessed remarkable progress in solution-processed methylammonium lead halide (CH 3 NH 3 PbX 3 , 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 TiO 2 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 TiO 2 nanorods (NRs), a material offering a two-fold higher electronic mobility and higher pore-filing compared to their particle analogues, as an ETL. A crucial issue in NRs' patterning over substrates is resolved by using precise Nd:YVO 4 laser ablation, and a champion device with η ∼ 8.1% is reported via a simple and low cost vacuum-vapor assisted sequential processing (V-VASP) of a CH 3 NH 3 PbI 3 film. Our experiments showed a successful demonstration of NRs-based 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.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore ING-INF/01 - Elettronica
English
charge transport; double-step deposition; nanorods solar cells; one-dimensional nanomaterials; pore filling in perovskite solar cells; stable perovskite solar modules; Bioengineering; Chemistry (all); Materials Science (all); Mechanics of Materials; Mechanical Engineering; Electrical and Electronic Engineering
https://iopscience.iop.org/article/10.1088/0957-4484/26/49/494002/meta
Fakharuddin, A., Palma, A.l., Giacomo, F.d., Casaluci, S., Matteocci, F., Wali, Q., et al. (2015). Solid state perovskite solar modules by vacuum-vapor assisted sequential deposition on Nd:YVO 4 laser patterned rutile TiO 2 nanorods. NANOTECHNOLOGY, 26(49), 494002 [10.1088/0957-4484/26/49/494002].
Fakharuddin, A; Palma, Al; Giacomo, Fd; Casaluci, S; Matteocci, F; Wali, Q; Rauf, M; Carlo, Ad; Brown, Tm; Jose, R
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2108/213209
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