Selected Electrochemical Properties of 4,4'-((1E,1'E)-((1,2,4-Thiadiazole-3,5-diyl)bis(azaneylylidene))bis(methaneylylidene))bis( N , N -di-p-tolylaniline) towards Perovskite Solar Cells with 14.4% Efficiency

• Published in: Materials 2020-05, Vol.13 (11), p.2440
• Main Authors: Bogdanowicz, Krzysztof Artur, Jewłoszewicz, Beata, Iwan, Agnieszka, Dysz, Karolina, Przybyl, Wojciech, Januszko, Adam, Marzec, Monika, Cichy, Kacper, Świerczek, Konrad, Kavan, Ladislav, Zukalová, Markéta, Nadazdy, Vojtech, Subair, Riyas, Majkova, Eva, Micusik, Matej, Omastova, Maria, Özeren, Mehmer Derya, Kamarás, Katalin, Heo, Do Yeon, Kim, Soo Young
• Format: Article
• Language: English
• ISSN: 1996-1944; 1996-1944
• DOI: 10.3390/ma13112440

Planar perovskite solar cells were fabricated on F-doped SnO (FTO) coated glass substrates, with 4,4'-((1E,1'E)-((1,2,4-thiadiazole-3,5-diyl)bis(azaneylylidene))bis(methaneylylidene))bis( , -di-p-tolylaniline) (bTAThDaz) as hole transport material. This imine was synthesized in one step reaction, starting from commercially available and relatively inexpensive reagents. Electrochemical, optical, electrical, thermal and structural studies including thermal images and current-voltage measurements of the full solar cell devices characterize the imine in details. HOMO-LUMO of bTAThDaz were investigated by cyclic voltammetry (CV) and energy-resolved electrochemical impedance spectroscopy (ER-EIS) and were found at -5.19 eV and -2.52 eV (CV) and at -5.5 eV and -2.3 eV (ER-EIS). The imine exhibited 5% weight loss at 156 °C. The electrical behavior and photovoltaic performance of the perovskite solar cell was examined for FTO/TiO /perovskite/bTAThDaz/Ag device architecture. Constructed devices exhibited good time and air stability together with quite small effect of hysteresis. The observed solar conversion efficiency was 14.4%.