Narrowband monolithic perovskite-perovskite tandem PDs
Lucía Martínez Goyeneche a, Lidón Gil Escrig a, Isidora Susic a, Daniel Tordera a, Michele Sessolo a, Henk Bolink a
a Universidad de Valencia - ICMol (Institute of Molecular Science), Catedrático José Beltrán Martinez 2, Paterna, Spain
International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV22)
València, Spain, 2022 May 19th - 25th
Organizers: Pablo Docampo, Eva Unger and Elizabeth Gibson
Poster, Lucía Martínez Goyeneche, 163
Publication date: 20th April 2022

Narrowband photodetectors (PDs) are particularly sought after for many applications requiring selective spectral response. The most common systems combine optical bandpass filters with broadband photodiodes. Here, we report a method to obtain a narrowband response in a perovskite PD by monolithic integration of a perovskite photoconductor and a perovskite photodiode. The spectral response of the tandem PD is determined by the bandgap energy difference of the two perovskites, and exhibits a full width at half maximum (FWHM) below 85 nm, an external quantum efficiency (EQE) up to 60% and a high specific detectivity of approximately 1012 Jones in reverse bias, enabling the device to detect weak light signals.

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