Enhanced Performance of Sn-Based Perovskite Photodetectors Through Double-Sided Passivation for Near-Infrared Applications.

ABSTRACT: The development of high-performance Sn-based perovskite photodetectors is presented with double-sided passivation using large alkylammonium interlayers of PEAI and BDAI₂. This dual passivation strategy, applied to the top and bottom of FASnI₃ films, effectively improves film quality by reducing defect density, enhancing carrier mobility, and minimizing non-radiative energy losses at the interfaces. At 720 nm, the photodetectors demonstrate a responsivity of 0.37 A W^-1, a detectivity of 6.12 × 10¹³ Jones, and an external quantum efficiency (EQE) of 65.60%, with a rapid response time of 9 µs. Additionally, at 850 nm, the detectivity reaches as high as 3.27 × 10¹³ Jones. Furthermore, the device demonstrated a low 1/f noise of 1.21 × 10⁻¹⁵ AHz⁻⁰.⁵ at 10 Hz. Tra

SUBMITTER: Lai YH 

PROVIDER: S-EPMC11798353 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature