Organic-inorganic broadband photodetector

Xianguang Yang; Baojun Li

doi:10.1117/12.2288873

12 January 2018 Organic-inorganic broadband photodetector

Xianguang Yang, Baojun Li

Proceedings Volume 10622, 2017 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices; 106220B (2018) https://doi.org/10.1117/12.2288873
Event: International Conference on Optical Instruments and Technology 2017, 2017, Beijing, China

Abstract

The capability to detect optical signals over a broad wavelength band is highly important for practical device applications. However, high speed responsive across entire wavelength band within a single photodetector remains challenge. Here we demonstrated a broadband photodetector using a single quantum-dot-doped polyaniline nanowire with a broadband responsive at 350-700 nm (see schematic). The high responsivity is attributed to the high density of trapping states at the enormous interfaces formed in polyaniline and quantum dots. The interface trapping can effectively reduce the recombination rate, promote the separation of photogenerated carriers, and then enhance the efficiency for optical detection.

Citation Download Citation

Xianguang Yang and Baojun Li "Organic-inorganic broadband photodetector", Proc. SPIE 10622, 2017 International Conference on Optical Instruments and Technology: Micro/Nano Photonics: Materials and Devices, 106220B (12 January 2018); https://doi.org/10.1117/12.2288873

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KEYWORDS

Photodetectors

Absorption

External quantum efficiency

Transmission electron microscopy

Excitons

Scanning electron microscopy

Electrodes

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