Dynamic FPAA-based Mixed-Signal Processing Circuit for Thin-Film CdTe/Lead-Free Perovskite Photodetectors

Authors

  • Ivailo M. Pandiev Department of Electronic Engineering, Technical University of Sofia, Bulgaria
  • Mariya P. Aleksandrova Department of Microelectronics, Technical University of Sofia, Bulgaria

DOI:

https://doi.org/10.5755/j02.eie.28751

Keywords:

Amplifiers, CdTe, FPAA, Lead-free Perovskites, Photodetectors, Pulse width modulation converters, Thin films

Abstract

New photodetector structure combining thinned CdTe film with lead-free perovskite photoelectric film was produced and investigated. This setting of the CdTe thickness results in photodetector parameters’ competitiveness to the state-of-the-art in the field of advanced photoelectric materials. The device shows a promising sensitivity of ~40 μA/W, maximum responsivity of 10.6 mA/W at 460 nm, equal rise and fall times of 30 ms, and high linearity (maximum linearization error is less than 0.6 %). However, the optoelectronic performance of CdTe/lead-free perovskite structures integrated with signal processing circuit remains unexplored. For this purpose, Field Programmable Analogue Array (FPAA)-based mixed-signal processing circuit is developed for pulse width modulated electrical signal with duty cycle controlled by the illumination degree of the detecting photoelement. This novel approach guarantees a smooth change of the electrical output at a smooth change of the input illumination between the light and dark switching states and can be practically applied as a precise position detector of moving objects. The paper represents a synergistic connection between microelectronics, electronics, and signal technology.

Downloads

Published

2021-04-29

How to Cite

Pandiev, I. M., & Aleksandrova, M. P. (2021). Dynamic FPAA-based Mixed-Signal Processing Circuit for Thin-Film CdTe/Lead-Free Perovskite Photodetectors. Elektronika Ir Elektrotechnika, 27(2), 22-30. https://doi.org/10.5755/j02.eie.28751

Issue

Section

ELECTRONICS

Funding data