Results 71 to 80 of about 153,555 (301)

Advancements and Challenges in Colloidal Quantum Dot Infrared Photodetectors: Strategies for Short-Wave Infrared, Mid-Wave Infrared, and Long-Wave Infrared Applications

Quantum Beam Science
Colloidal quantum dots (QDs) have emerged as promising materials for the development of infrared photodetectors owing to their tunable band gaps, cost-effective manufacturing, and ease of processing.
Lijing Yu, Pin Tian, Kun Liang
doaj   +1 more source

BICEP3: a 95 GHz refracting telescope for degree-scale CMB polarization [PDF]

, 2014
BICEP3 is a 550 mm-aperture refracting telescope for polarimetry of radiation in the cosmic microwave background at 95 GHz. It adopts the methodology of BICEP1, BICEP2 and the Keck Array experiments - it possesses sufficient resolution to search for ...
Ahmed, Z., Amiri, M., Benton, S. J., Bock, J. J., Bowens-Rubin, R., Buder, I., Bullock, E., Connors, J., Filippini, J. P., Grayson, J. A., Halpern, M., Hilton, G. C., Hristov, V. V., Hui, H., Irwin, K. D., Kang, J., Karkare, K. S., Karpel, E., Kovac, J. M., Kuo, C. L., Netterfield, C. B., Nguyen, H. T., O'Brient, R., Ogburn IV, R. W., Pryke, C., Reintsema, C. D., Richter, S., Thompson, K. L., Turner, A. D., Vieregg, A. G., Wu, W. L. K., Yoon, K. W.   +31 more
core   +1 more source

Ferrocene Derivatives Enable Ultrasensitive Perovskite Photodetectors with Enhanced Reverse Bias Stability

Advanced Functional Materials, EarlyView.
Novel ferrocene derivatives (e.g., FcPhc2) are used as an ultrathin layer hole‐blocking layer, reducing hole injection from the Ag contact. This results in an ultralow noise spectral density of 1.2 × 10−14 A Hz−1/2, and a high specific detectivity of 8.1 × 1012 Jones at −0.5 V.
Eunyoung Hong, William D. J. Tremlett, Lucy Hart, Beier Hu, Zhuoran Qiao, Patipan Sukpoonprom, Sarah Fearn, Edoardo Angela, Matilde Brunetta, Demosthenes C. Koutsogeorgis, Nikolaos Kalfagiannis, Davide Nodari, Martyn A. McLachlan, Piers R. F. Barnes, Artem A. Bakulin, Nicholas J. Long, Nicola Gasparini   +16 more
wiley   +1 more source

PbSe/CdTe single quantum well infrared detectors

AIP Advances, 2017
We report on the fabrication and characterization of a new type of mid-infrared photodetector. The infrared sensitive element of the detector is a PbSe single quantum well (SQW) embedded in an intrinsic region of a CdTe p-i-n diode. Electron-beam-induced
S. Chusnutdinow, M. Szot, T. Wojtowicz, G. Karczewski   +3 more
doaj   +1 more source

NbTiN superconducting nanowire detectors for visible and telecom wavelengths single photon counting on Si3N4 photonic circuits

, 2013
We demonstrate niobium titanium nitride superconducting nanowires patterned on stoichiometric silicon nitride waveguides for detecting visible and infrared photons. The use of silicon nitride on insulator on silicon substrates allows us to simultaneously
Pernice, W. H. P., Schuck, C., Tang, H. X.   +2 more
core   +1 more source

Intermolecular Interactions as Driving Force of Increasing Multiphoton Absorption in a Perylene Diimide‐Based Coordination Polymer

Advanced Functional Materials, EarlyView.
This study uncovers the unexplored role of intermolecular interactions in multiphoton absorption in coordination polymers. By analyzing [Zn2tpda(DMA)2(DMF)0.3], it shows how the electronic coupling of the chromophores and confinement in the MOF enhance two‐and three‐photon absorption.
Simon Nicolas Deger, Anna Mauri, Yang Cui, Sebastian Josef Weishäupl, Ali Deniz Özdemir, Hamad Syed, Aleksandr Ovsianikov, Wolfgang Wenzel, Alexander Pöthig, Jürgen Hauer, Mariana Kozlowska, Roland Augustinus Fischer   +11 more
wiley   +1 more source

Experimental Study on Damage Effect of Mid-Infrared Pulsed Laser on Charge Coupled Device (CCD) and HgCgTe Detectors

Sensors
As the weak link in electro-optical imaging systems, photodetectors have always faced the threat of laser damage. In this paper, we experimentally investigated the damage mechanism of the photodetector induced by the out-of-band laser.
Yang Liu, Feng Zhou, Yunzhe Wang, Yin Zhang, Yunfeng Zhang, Hanyu Zheng, Junfeng Shao   +6 more
doaj   +1 more source

Extended-wavelength InGaAsSb infrared unipolar barrier detectors

AIP Advances, 2018
We presented an extended-wavelength InGaAsSb infrared unipolar barrier detector working at room temperature. The detector with GaSb lattice-matched InGaAsSb absorb layer and AlGaAsSb unipolar barrier can achieve high material quality and low dark current.
Hongyue Hao, Guowei Wang, Xi Han, Dongwei Jiang, Yaoyao Sun, Chunyan Guo, Wei Xiang, Yingqiang Xu, Zhichuan Niu   +8 more
doaj   +1 more source

Balloon borne humidity and aerosol sensors [PDF]

Infrared detectors for balloon sensing of aerosols and atmospheric ...
Barker, D. B., Murcray, P. G.
core   +1 more source

Counting Near Infrared Photons with Microwave Kinetic Inductance Detectors

, 2017
We demonstrate photon counting at 1550 nm wavelength using microwave kinetic inductance detectors (MKIDs) made from TiN/Ti/TiN trilayer films with superconducting transition temperature Tc ~ 1.4 K.
Fowler, J., Gao, J., Guo, W., Hubmayr, J., Liu, X., Ullom, J., Vale, L., Vissers, M. R., Wang, Y., Wei, L. F., Wei, Q.   +10 more
core   +1 more source