期刊
ADVANCED OPTICAL MATERIALS
卷 8, 期 23, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.202001038
关键词
all-polymer photodetector; green selectivity; high detectivity; p-n junction
资金
- National Research Foundation of Korea [2016R1A5A1012966, 2019R1A2C1089081, 2020M3H4A3081816]
- Catholic University of Korea
- National Research Foundation of Korea [4220200213612] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Currently available wavelength-selective p-n junction organic photodetectors (OPDs) nearly exclusively use small molecules. In this study, green (G) selective all-polymer p-n junction OPDs are developed by engineering the pi-conjugation networks and insulating properties of p- and n-type polymers. Enhanced intermolecular ordering of p-n junction blend films compared to pristine polymer films results in superior hole/electron mobilities and low bimolecular recombination in the devices. Notably, similar G absorption ranges and the huge difference in their absorption coefficients between p- and n-type polymers make excellent G selectivity in the p-n junction OPDs. Thus, narrow selectivity with a full width at half maximum of 155 nm toward green light and high detectivity of approximate to 10(13)Jones are achieved in the all-polymer p-n junction OPDs.
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