Infrared photodetection using narrow bandgap conjugated polymers

Jason D. Azoulay

doi:10.1117/12.3000525

12 March 2024 Infrared photodetection using narrow bandgap conjugated polymers

Jason D. Azoulay

Proceedings Volume PC12883, Organic Photonic Materials and Devices XXVI; PC128830A (2024) https://doi.org/10.1117/12.3000525
Event: SPIE OPTO, 2024, San Francisco, California, United States

Abstract

Low-energy, infrared (IR) photodetection forms the foundation for industrial, scientific, energy, medical, and defense applications. State-of-the-art technologies suffer from limited modularity, intrinsic fragility, high-power consumption, require cooling, and are largely incompatible with integrated circuit technologies. Conjugated polymers offer low-cost and scalable fabrication, solution processability, room temperature operation, and other attributes that are not available using current technologies. Here, we demonstrate new materials and device paradigms that enable an understanding of emergent light-matter interactions and optical to electrical transduction of IR light. Photodiodes show a response to 2.0 μm, while photoconductors respond across the near- to long-wave infrared (1–14 µm). Fundamental investigations of polymer and device physics have resulted in improving performance to levels now matching commercial inorganic detectors. This is the longest wavelength light detected for organic materials and the performance exceeds graphene at longer wavelengths. Photoconductors outperform their inorganic counterparts and operate at room temperature with higher response speeds.

Conference Presentation

Citation Download Citation

Jason D. Azoulay "Infrared photodetection using narrow bandgap conjugated polymers", Proc. SPIE PC12883, Organic Photonic Materials and Devices XXVI, PC128830A (12 March 2024); https://doi.org/10.1117/12.3000525

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KEYWORDS

Polymers

Infrared radiation

Infrared photography

Photodetectors

Infrared detectors

Photoresistors

Organic materials

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