Surface fluorination of ALD TiO2 electron transport layer for efficient planar Perovskite solar cells

V. Zardetto, F. Di Giacomo, H. Lifka, M.A. Verheijen, C.H.L. Weijtens, L.E. Black, S. Veenstra, W.M.M. Kessels, R. Andriessen, M. Creatore

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

7 Citaties (Scopus)

Uittreksel

Perovskite solar cells (PSCs) are emerging among the photovoltaic (PV) technologies due to their high power conversion efficiency (PCE) in combination with potentially low cost manufacturing processing. In this contribution, the fabrication of efficient planar n-i-p PSCs by the modification of the electron transport layer (ETL) adopted as n-type contact is demonstrated. Specifically, a fluorine-based plasma treatment prior to perovskite deposition leads to surface fluorination of the TiO2 ETL. The presence of fluorine on the TiO2 surface drastically improves the adhesion between the ALD layer and the methylammonium lead iodide perovskite film, and leads to a more favourable energy band alignment, accompanied by a faster electron carrier extraction at the interface. As consequence of surface fluorination, we observe a significant reduction in the current density-voltage curve hysteresis with respect to the ALD based reference sample, as well as a remarkable improvement in power conversion efficiency from 4% up to a stable 14.8%.

Originele taal-2Engels
Artikelnummer1701456
Aantal pagina's6
TijdschriftAdvanced Materials Interfaces
Volume5
Nummer van het tijdschrift9
Vroegere onlinedatum14 mrt 2018
DOI's
StatusGepubliceerd - sep 2018

Vingerafdruk

Fluorination
Fluorine
Perovskite
Conversion efficiency
Band structure
Hysteresis
Current density
Adhesion
Plasmas
Fabrication
Electrons
Electric potential
Processing
Perovskite solar cells
Costs
Electron Transport

Citeer dit

@article{d857e28eebf34981899a8afe445b52c6,
title = "Surface fluorination of ALD TiO2 electron transport layer for efficient planar Perovskite solar cells",
abstract = "Perovskite solar cells (PSCs) are emerging among the photovoltaic (PV) technologies due to their high power conversion efficiency (PCE) in combination with potentially low cost manufacturing processing. In this contribution, the fabrication of efficient planar n-i-p PSCs by the modification of the electron transport layer (ETL) adopted as n-type contact is demonstrated. Specifically, a fluorine-based plasma treatment prior to perovskite deposition leads to surface fluorination of the TiO2 ETL. The presence of fluorine on the TiO2 surface drastically improves the adhesion between the ALD layer and the methylammonium lead iodide perovskite film, and leads to a more favourable energy band alignment, accompanied by a faster electron carrier extraction at the interface. As consequence of surface fluorination, we observe a significant reduction in the current density-voltage curve hysteresis with respect to the ALD based reference sample, as well as a remarkable improvement in power conversion efficiency from 4{\%} up to a stable 14.8{\%}.",
keywords = "CF plasma, Low-temperature atomic layer deposition, Perovskite, Surface treatment, TiO",
author = "V. Zardetto and {Di Giacomo}, F. and H. Lifka and M.A. Verheijen and C.H.L. Weijtens and L.E. Black and S. Veenstra and W.M.M. Kessels and R. Andriessen and M. Creatore",
year = "2018",
month = "9",
doi = "10.1002/admi.201701456",
language = "English",
volume = "5",
journal = "Advanced Materials Interfaces",
issn = "2196-7350",
publisher = "Wiley",
number = "9",

}

Surface fluorination of ALD TiO2 electron transport layer for efficient planar Perovskite solar cells. / Zardetto, V.; Di Giacomo, F.; Lifka, H.; Verheijen, M.A.; Weijtens, C.H.L.; Black, L.E.; Veenstra, S.; Kessels, W.M.M.; Andriessen, R.; Creatore, M.

In: Advanced Materials Interfaces, Vol. 5, Nr. 9, 1701456, 09.2018.

Onderzoeksoutput: Bijdrage aan tijdschriftTijdschriftartikelAcademicpeer review

TY - JOUR

T1 - Surface fluorination of ALD TiO2 electron transport layer for efficient planar Perovskite solar cells

AU - Zardetto, V.

AU - Di Giacomo, F.

AU - Lifka, H.

AU - Verheijen, M.A.

AU - Weijtens, C.H.L.

AU - Black, L.E.

AU - Veenstra, S.

AU - Kessels, W.M.M.

AU - Andriessen, R.

AU - Creatore, M.

PY - 2018/9

Y1 - 2018/9

N2 - Perovskite solar cells (PSCs) are emerging among the photovoltaic (PV) technologies due to their high power conversion efficiency (PCE) in combination with potentially low cost manufacturing processing. In this contribution, the fabrication of efficient planar n-i-p PSCs by the modification of the electron transport layer (ETL) adopted as n-type contact is demonstrated. Specifically, a fluorine-based plasma treatment prior to perovskite deposition leads to surface fluorination of the TiO2 ETL. The presence of fluorine on the TiO2 surface drastically improves the adhesion between the ALD layer and the methylammonium lead iodide perovskite film, and leads to a more favourable energy band alignment, accompanied by a faster electron carrier extraction at the interface. As consequence of surface fluorination, we observe a significant reduction in the current density-voltage curve hysteresis with respect to the ALD based reference sample, as well as a remarkable improvement in power conversion efficiency from 4% up to a stable 14.8%.

AB - Perovskite solar cells (PSCs) are emerging among the photovoltaic (PV) technologies due to their high power conversion efficiency (PCE) in combination with potentially low cost manufacturing processing. In this contribution, the fabrication of efficient planar n-i-p PSCs by the modification of the electron transport layer (ETL) adopted as n-type contact is demonstrated. Specifically, a fluorine-based plasma treatment prior to perovskite deposition leads to surface fluorination of the TiO2 ETL. The presence of fluorine on the TiO2 surface drastically improves the adhesion between the ALD layer and the methylammonium lead iodide perovskite film, and leads to a more favourable energy band alignment, accompanied by a faster electron carrier extraction at the interface. As consequence of surface fluorination, we observe a significant reduction in the current density-voltage curve hysteresis with respect to the ALD based reference sample, as well as a remarkable improvement in power conversion efficiency from 4% up to a stable 14.8%.

KW - CF plasma

KW - Low-temperature atomic layer deposition

KW - Perovskite

KW - Surface treatment

KW - TiO

UR - http://www.scopus.com/inward/record.url?scp=85043592309&partnerID=8YFLogxK

U2 - 10.1002/admi.201701456

DO - 10.1002/admi.201701456

M3 - Article

AN - SCOPUS:85043592309

VL - 5

JO - Advanced Materials Interfaces

JF - Advanced Materials Interfaces

SN - 2196-7350

IS - 9

M1 - 1701456

ER -