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Mitigating Dark Current in Photomultiplication Organic Photodetectors via the Gradient Charge Trap Bulk Heterojunction

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Photomultiplication-type organic photodetectors (PM-OPDs) with dispersed electron or hole traps in a bulk heterojunction (BHJ) have external quantum efficiency far exceeding unity. However, it typically requires a very low donor-to-acceptor ratio, as excess do... ...