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Efficient fully laser-patterned flexible perovskite modules and solar cells based on low-temperature solution-processed SnO2/mesoporous-TiO2 electron transport layers

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Abstract

Efficient flexible perovskite solar cells and modules were developed using a combination of SnO2 and mesoporous-TiO2 as a fully solution-processed electron transport layer (ETL). Cells using such ETLs delivered a maximum power conversion efficiency (PCE) of 14.8%, which was 30% higher than the PCE of cells with only SnO2 as the ETL. The presence of a mesoporous TiO2 scaffold layer over SnO2 led to higher rectification ratios, lower series resistances, and higher shunt resistances. The cells were also evaluated under 200 and 400 lx artificial indoor illumination and found to deliver maximum power densities of 9.77 μW/cm2 (estimated PCE of 12.8%) and 19.2 μW/cm2 (estimated PCE of 13.3%), respectively, representing the highest values among flexible photovoltaic technologies reported so far. Furthermore, for the first time, a fully laser-patterned flexible perovskite module was fabricated using a complete three-step laser scribing procedure (P1, P2, P3) with a PCE of 8.8% over an active area of 12 cm2 under an illumination of 1 sun.

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Acknowledgements

We thank Francesco Di Giacomo, Dr. Francesca Brunetti, and Prof. Andrea Reale for useful discussions. We thank MIUR for PRIN 2012 (2012A4Z2RY) “AQUASOL” (Celle solari polimeriche processabili da mezzi acquosi: dai materiali ai moduli fotovoltaici), for PERSEO- “PERrovskite-based Solar cells: towards high Efficiency and lOng-term stability” (Bando PRIN 2015-Italian Ministry of University and Scientific Research (MIUR) Decreto Direttoriale 4 novembre 2015 n. 2488, project number 20155LECAJ), the EU CHEETAH project, and the Departamento del Huila’s Scholarship Program No. 677 from Huila, Colombia for funding. A. D. C. gratefully acknowledge the financial support of the Ministry of Education and Science of the Russian Federation in the framework of Increase Competitiveness Program of NUST “MISiS” (No. К2-2017-025), implemented by a governmental decree dated 16th of March 2013, N 211.

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Authors and Affiliations

  1. CHOSE (Centre for Hybrid and Organic Solar Energy), Department of Electronic Engineering, University of Rome Tor Vergata, Via del Politecnico 1, 00133, Rome, Italy

    Janardan Dagar, Sergio Castro-Hermosa, Matteo Gasbarri, Alessandro L. Palma, Fabio Matteocci, Emanuele Calabrò, Aldo Di Carlo & Thomas M. Brown

  2. Cicci Research srl, via Giordania 227, Grosseto, 58100, Italy

    Lucio Cina

  3. Department of semiconductor electronics and device physics, National University of Science and Technology “MISiS”, Leninskii pr.4, Moscow, 119049, Russia

    Aldo Di Carlo

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  1. Janardan Dagar
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Efficient fully laser-patterned flexible perovskite modules and solar cells based on low-temperature solution-processed SnO2/mesoporous-TiO2 electron transport layers

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Dagar, J., Castro-Hermosa, S., Gasbarri, M. et al. Efficient fully laser-patterned flexible perovskite modules and solar cells based on low-temperature solution-processed SnO2/mesoporous-TiO2 electron transport layers. Nano Res. 11, 2669–2681 (2018). https://doi.org/10.1007/s12274-017-1896-5

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