Proceedings of MATSUS Spring 2024 Conference (MATSUS24)
Publication date: 18th December 2023
The exceptional advancements in metal halide perovskites (MHPs) developed in the last
years have positioned this semiconductor family as a promising option for pioneering a
new generation of optoelectronic devices. However, realizing the practical potential of
these semiconductors requires a deeper exploration of their outstanding properties and
their adequate integration with electronic circuits to maximize their advantages.
This work presents a comprehensive photodetection system that integrates MAPbI3 (MA:
methylammonium) MHPs polycrystalline thin films with interdigital electrodes, coupled
with an effective method for extracting the generated photocurrent using a
transimpedance amplifier. Through this setup, the photoconductive characteristics of the
devices are extensively analyzed, encompassing sensitivity, on-off ratio, and frequency
response. As a result, the proposed device demonstrates sensitivity below 1 μW at 450
nm, measures photocurrents smaller than 1 nA, and operates at frequencies surpassing 10
kHz.
These findings represent a significant advancement toward employing MHPs as highperformance
photodetectors in telecommunications and sensing applications.
This Project received funding from the Spanish MINECO through projects no.PID2020-120484RB-I00 and PID2019-107314RB I00 (Stable), and by Generalitat Valenciana COMCUANTICA/009.
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