期刊
SCIENCE ADVANCES
卷 7, 期 24, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.abg2418
关键词
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资金
- Organic Materials Chemistry Program [FA9550-20-1-0353]
- National Science Foundation [OIA-1757220]
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences [DE-AC02-76SF00515]
This research presents a new platform for infrared optoelectronics using a donor-acceptor conjugated polymer, which enables high-performance infrared photodetection with wide spectral range, operation at room temperature, and excellent detectivity. This offers a promising solution for low-cost infrared optoelectronics.
Photodetection spanning the short-, mid-, and long-wave infrared (SWIR-LWIR) underpins modern science and technology. Devices using state-of-the-art narrow bandgap semiconductors require complex manufacturing, high costs, and cooling requirements that remain prohibitive for many applications. We report high-performance infrared photodetection from a donor-acceptor conjugated polymer with broadband SWIR-LWIR operation. Electronic correlations within the.-conjugated backbone promote a high-spin ground state, narrow bandgap, long-wavelength absorption, and intrinsic electrical conductivity. These previously unobserved attributes enabled the fabrication of a thin-film photoconductive detector from solution, which demonstrates specific detectivities greater than 2.10 x 10(9) Jones. These room temperature detectivities closely approach those of cooled epitaxial devices. This work provides a fundamentally new platform for broadly applicable, low-cost, ambient temperature infrared optoelectronics.
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