Polymer: Fullerene Bimolecular Crystals for Near-Infrared Spectroscopic Photodetectors

	Polymer: Fullerene Bimolecular Crystals for Near-Infrared Spectroscopic Photodetectors
	Tang, Zheng 1,2; Ma, Zaifei 1,2; Sanchez-Diaz, Antonio 3; Ullbrich, Sascha 1,2; Liu, Yuan 1,2; Siegmund, Bernhard 1,2; Mischok, Andreas 1,2; Leo, Karl 1,2; Campoy-Quiles, Mariano 3; Li, Weiwei 4
刊名	ADVANCED MATERIALS
	2017-09-06
卷号	29 期号:33
关键词	Bimolecular Crystals Cavity Photodetectors Miniature Spectrometers Tunable Spectra Wavelength Selectivity
英文摘要	Spectroscopic photodetection is a powerful tool in disciplines such as medical diagnosis, industrial process monitoring, or agriculture. However, its application in novel fields, including wearable and biointegrated electronics, is hampered by the use of bulky dispersive optics. Here, solution-processed organic donor-acceptor blends are employed in a resonant optical cavity device architecture for wavelength-tunable photodetection. While conventional photodetectors respond to above-gap excitation, the cavity device exploits weak subgap absorption of intermolecular charge-transfer states of the intercalating poly[2,5-bis(3-tetradecylthiophen-2-yl) thieno[3,2-b] thiophene] (PBTTT):[6,6]-phenyl-C61-butyric acid methyl ester (PCBM) bimolecular crystal. This enables a highly wavelength selective, near-infrared photoresponse with a spectral resolution down to 14 nm, as well as dark currents and detectivities comparable with commercial inorganic photodetectors. Based on this concept, a miniaturized spectrophotometer, comprising an array of narrowband cavity photodetectors, is fabricated by using a blade-coated PBTTT: PCBM thin film with a thickness gradient. As an application example, a measurement of the transmittance spectrum of water by this device is demonstrated.
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/39323]
专题	化学研究所_有机固体实验室
作者单位	1.Tech Univ Dresden, Dresden Integrated Ctr Appl Phys & Photon Mat IAP, D-01187 Dresden, Germany 2.Tech Univ Dresden, Inst Appl Phys, D-01187 Dresden, Germany 3.Inst Ciencia Mat Barcelona ICMAB CSIC, Campus UAB, Bellaterra 08193, Spain 4.Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 10090, Peoples R China
推荐引用方式 GB/T 7714	Tang, Zheng,Ma, Zaifei,Sanchez-Diaz, Antonio,et al. Polymer: Fullerene Bimolecular Crystals for Near-Infrared Spectroscopic Photodetectors[J]. ADVANCED MATERIALS,2017,29(33).
APA	Tang, Zheng.,Ma, Zaifei.,Sanchez-Diaz, Antonio.,Ullbrich, Sascha.,Liu, Yuan.,...&Vandewal, Koen.(2017).Polymer: Fullerene Bimolecular Crystals for Near-Infrared Spectroscopic Photodetectors.ADVANCED MATERIALS,29(33).
MLA	Tang, Zheng,et al."Polymer: Fullerene Bimolecular Crystals for Near-Infrared Spectroscopic Photodetectors".ADVANCED MATERIALS 29.33(2017).