• • PSQ-COT:PC61BM OPD achieves a specific detectivity of 1.08 × 10^12 Jones at 1030 nm under zero bias, outperforming the BTP-eC9 counterpart, which is critical for low-light SWIR imaging without external power.
• • The absorption onset of PSQ-COT extends to 1.2 μm, enabling SWIR detection beyond the silicon limit, which is essential for applications in biological imaging and optical communication.
• • The PSQ-COT:PC61BM device exhibits lower energetic disorder and reduced trap density compared to BTP-eC9, leading to superior performance; this highlights the importance of acceptor selection in optimizing OPD performance.
• • Successful integration into a 640 × 512 pixel image array demonstrates the scalability of PSQ-COT for high-resolution SWIR imaging, paving the way for cost-effective, flexible imagers.