Metal halide perovskite photodiodes have garnered extensive attention owing to their favorable optoelectronic properties, rendering them attractive for visible, near-infrared, and X-ray sensors. However, their predominant reliance on solution-processing deposition techniques poses challenges for seamless integration into existing industrial processes. In this study, this limitation is addressed by developing fully vacuum-processed perovskite photodiodes with varying hole transport layers (HTL). These findings underscore the critical role of HTL selection in influencing the dark and noise current characteristics of the diodes. With an optimized HTL, photodiodes are obtained with low noise current (approximate to 3 10-14 A Hz-1/2) and high specific detectivity (approximate to 1012 Jones at 710 nm at -0.5 V). The photodiodes are also tested as X-ray detectors and are found to be stable under X-ray radiation, with state-of-the-art sensitivity of 33 +/- 4 mu C Gy-1 cm-2 and a low limit of detection of 2.0 +/- 1.6 mu G s-1. These insights contribute to the development of perovskite photodiodes with improved performance and broader industrial applicability.Fully vacuum-processed perovskite photodiodes with varying hole transport layers (HTL) are investigated. These findings underscore the critical role of HTL selection in influencing the dark and noise current characteristics of the diodes. With an optimized HTL, photodiodes are obtained with low noise current, high specific detectivity, and state-of-the-art X-ray sensitivity. image
Martínez-Goyeneche, L., Ollearo, R., Bordoni, C., Ciavatti, A., van Breemen, A.J.J.M., Gelinck, G.H., et al. (2024). Vacuum-Deposited Perovskite Photodiodes for Visible and X-Ray Photon Detection. ADVANCED OPTICAL MATERIALS, 12(20), 2400464-2400470 [10.1002/adom.202400464].
Vacuum-Deposited Perovskite Photodiodes for Visible and X-Ray Photon Detection
Bordoni C.;Ciavatti A.;Fraboni B.;
2024
Abstract
Metal halide perovskite photodiodes have garnered extensive attention owing to their favorable optoelectronic properties, rendering them attractive for visible, near-infrared, and X-ray sensors. However, their predominant reliance on solution-processing deposition techniques poses challenges for seamless integration into existing industrial processes. In this study, this limitation is addressed by developing fully vacuum-processed perovskite photodiodes with varying hole transport layers (HTL). These findings underscore the critical role of HTL selection in influencing the dark and noise current characteristics of the diodes. With an optimized HTL, photodiodes are obtained with low noise current (approximate to 3 10-14 A Hz-1/2) and high specific detectivity (approximate to 1012 Jones at 710 nm at -0.5 V). The photodiodes are also tested as X-ray detectors and are found to be stable under X-ray radiation, with state-of-the-art sensitivity of 33 +/- 4 mu C Gy-1 cm-2 and a low limit of detection of 2.0 +/- 1.6 mu G s-1. These insights contribute to the development of perovskite photodiodes with improved performance and broader industrial applicability.Fully vacuum-processed perovskite photodiodes with varying hole transport layers (HTL) are investigated. These findings underscore the critical role of HTL selection in influencing the dark and noise current characteristics of the diodes. With an optimized HTL, photodiodes are obtained with low noise current, high specific detectivity, and state-of-the-art X-ray sensitivity. imageI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.