Abstract

We exploit TiO2 surface functionalization as a tool to induce the crystallization process of CH3NH3PbI3−xClx perovskite thin films resulting in a reduction of the degree of orientation of the (110) crystallographic planes. Notably, the variation of the film crystalline orientational order does not affect the photovoltaic performances of the perovskite-based devices, whose efficiency remains mostly unchanged. Our findings suggest that other factors are more significant in determining the device efficiency, such as the non-homogenous coverage of the TiO2 surface causing charge recombination at the organic/TiO2 interface, defect distribution on the perovskite bulk and at the interfaces, and transport in the organic or TiO2 layer. This observation represents a step towards the comprehension of the perovskite film peculiarities influencing the photovoltaic efficiency for high performance devices.

Autore Pugliese

• Listorti Andrea , Gigli Giuseppe , Colella Silvia

Tutti gli autori

• Guerra V. L. P. , Altamura D. , Trifiletti V. , Colella S. , Listorti A. , Giannuzzi R. , Pellegrino G. , Condorelli G.G. , Giannini C. , Gigli G. , Rizzo A.

Titolo volume/Rivista

JOURNAL OF MATERIALS CHEMISTRY. A

Anno di pubblicazione

2015

ISSN

2050-7488

ISBN

Non Disponibile

Numero di citazioni Wos

Nessuna citazione

Ultimo Aggiornamento Citazioni

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Numero di citazioni Scopus

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Ultimo Aggiornamento Citazioni

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Settori ERC

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Codici ASJC

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