High‐Sensitivity and Fast‐Response Photomultiplication Type Photodetectors Based on Quasi‐2D Perovskite Films for Weak‐Light Detection
Guohua Ma,
Yanna Hou,
Zhenwang Luo
et al.
Abstract:Photovoltaic photodiodes often face challenges in effectively harvesting electrical signals, especially when detecting faint light. In contrast, photomultiplication type photodetectors (PM‐PDs) are renowned for their exceptional sensitivity to weak signals. Here, an advanced PM‐PD is introduced based on quasi 2D Ruddlesden‐Popper (Q‐2D RP) perovskites, optimized for weak light detection at minimal operating voltages. The abundant traps at the Q‐2D RP surface capture charge carriers, inducing a trap‐assisted tu… Show more
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