Year: 2025
Type: article
Abstract: Photon-based organic photodetector performance drops rapidly when going beyond near-infrared light detection due to nonradiative recombination. Here, we report on a device concept for infrared detection using organic thermoelectrics coupled to an infrared absorption film for heat generation. These short wavelength infrared (SWIR) detectors show an excellent area normalized responsivity of over 10 9 milliampere per watt per square meter at 1 V, two to three orders of magnitude higher than the conjugated polymer SWIR detector reported in the literature and typical organic photodetectors in the visible and near-infrared wavelength range. Moreover, the devices show a fast switch-on time with an estimated 3-decibel frequency of over 610 kilohertz, making the device suitable for a wide range of applications. However, the specific detectivity of the current device concept is limited to 10 4 Jones. We discuss strategies for improving the specific detectivities of these detectors with technology computer-aided design simulations.
Source: Science Advances
Language: English
Subfield: Electrical and Electronic Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $4,500
Award: G3856609521
OpenAlex ID: W4410026729