Work

Stark Effect in Perovskite/TiO2 Solar Cells: Evidence of Local Interfacial Order

Year: 2014

Type: article

Abstract: To unveil the mechanisms controlling photovoltaic conversion in high-performing perovskite-based mesostructured solar cells, we focus on the key role played by the mesoporous oxide/perovskite interface. We employ several spectroscopic techniques to design a complete scenario and corroborate our results with first principle density functional theory calculations. In particular Stark spectroscopy, a powerful tool allowing interface-sensitive analysis is employed to prove the existence of oriented permanent dipoles, consistent with the hypothesis of an ordered perovskite layer, close to the oxide surface. The existence of a structural order, promoted by specific local interactions, could be one of the decisive reasons for highly efficient carriers transport within perovskite films.

Source: Nano Letters

DOI: 10.1021/nl500544c

Authors: Vittoria Roiati, Edoardo Mosconi, Andrea Listorti, Silvia Colella, Giuseppe Gigli, Filippo De Angelis

Institutions: Italian Institute of Technology, Center for Nano Science and Technology, Center for Biomolecular Nanotechnologies, Politecnico di Milano, Institute of Molecular Science and Technologies, Istituto Nanoscienze, University of Salento

Language: English

Topic: Perovskite Materials and Applications

Subfield: Electrical and Electronic Engineering

Field: Engineering

Domain: Physical Sciences

SDG: Affordable and clean energy

Open Access status: green

OpenAlex ID: W2033656168

FWCI: 19.14

Cites: 43

Cited by: 220

Related to: 10