PERFORMANCE IMPROVEMENT OF PEROVSKITE OPTOELECTRONIC DEVICES BY THE PASSIVATION PEROVSIKTE LAYER THROUGH ANTI-SOLVENT ADDITIVE DEPOSITION
Ivan Mora-Sero a, Thi Tuyen Ngo a, Isaac Suarez b, Juan P. Martinez-Pastor b, Aurelio Mateo-Alonso c, Diego Cortizo-Lacalle c, Gabriella Antonicelli c
a UMDO, Instituto de Ciencia de los Materiales, Universidad de Valencia, 46071 Valencia, Spain., Spain
b POLYMAT, University of the Basque Country, ES, Avenida de Tolosa 72, San Sebastian, Spain
NIPHO
Proceedings of Perovskite Thin Film Photovoltaics (ABXPV17)
València, Spain, 2017 March 1st - 2nd
Organizers: Hendrik Bolink and David Cahen
Poster, Thi Tuyen Ngo, 018
Publication date: 18th December 2016

We have provided a novel method to passivate perovskite layer by introducing additives through the anti-solvent deposition step. Different additives, namely, a twisted hexaazatrinaphthylene (HATNA) and a bisthiadiazolefused tetraazapentacenequinone (DCL97), were chosen to verify the method. Optoelectronic devices based on perovskite passivated such as solar cells, LEDs and waveguide light amplifiers have been investigated. We have observed a significant improvement of the performance of all three devices. Photoconversion efficiency of solar cells has been increased 25% respect the reference cell, with no additive, while current/potential hysteresis has been decreased. We have also detected an increase of EQE for LEDs in a factor 3 and the reduction of the light amplification threshold energy in a factor of 2 to 4 when organic additives are introduced. Systematic characterization points the main role of additives is to passivate the grain boundaries and/or perovskite interface with organic additives, thus producing a reduction of non-radiative recombination that leads to a notable increase of the main figures of merit of perovskite optoelectronic devices.



© FUNDACIO DE LA COMUNITAT VALENCIANA SCITO
We use our own and third party cookies for analysing and measuring usage of our website to improve our services. If you continue browsing, we consider accepting its use. You can check our Cookies Policy in which you will also find how to configure your web browser for the use of cookies. More info