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Advanced Far Infrared Blocked Impurity Band Detectors Based On Germanium Liquid Phase Epitaxy
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Book Synopsis Advanced Far Infrared Blocked Impurity Band Detectors Based on Germanium Liquid Phase Epitaxy by : Christopher Sean Olsen
Download or read book Advanced Far Infrared Blocked Impurity Band Detectors Based on Germanium Liquid Phase Epitaxy written by Christopher Sean Olsen and published by . This book was released on 1998 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Advanced Far Infrared Blocked Impurity Band Detectors Based on Germanium Liquid Phase Epitaxy by :
Download or read book Advanced Far Infrared Blocked Impurity Band Detectors Based on Germanium Liquid Phase Epitaxy written by and published by . This book was released on 1998 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: This research has shown that epilayers with residual impurity concentrations of 5 x 1013 cm−3 can be grown by producing the purest Pb available in the world. These epilayers have extremely low minority acceptor concentrations, which is ideal for fabrication of IR absorbing layers. The Pb LPE growth of Ge also has the advantageous property of gettering Cu from the epilayer and the substrate. Epilayers have been grown with intentional Sb doping for IR absorption on lightly doped substrates. This research has proven that properly working Ge BIB detectors can be fabricated from the liquid phase as long as pure enough solvents are available. The detectors have responded at proper wavelengths when reversed biased even though the response did not quite reach minimum wavenumbers. Optimization of the Sb doping concentration should further decrease the photoionization energy of these detectors. Ge BIB detectors have been fabricated that respond to 60 cm−1 with low responsivity. Through reduction of the minority residual impurities, detector performance has reached responsivities of 1 A/W. These detectors have exhibited quantum efficiency and NEP values that rival conventional photoconductors and are expected to provide a much more sensitive tool for new scientific discoveries in a number of fields, including solid state studies, astronomy, and cosmology.
Book Synopsis Liquid Phase Epitaxial Growth and Characterization of Germanium Far Infrared Blocked Impurity Band Detectors by : Jordana Bandaru
Download or read book Liquid Phase Epitaxial Growth and Characterization of Germanium Far Infrared Blocked Impurity Band Detectors written by Jordana Bandaru and published by . This book was released on 2001 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Far-infrared Germanium Photodetectors by Ion Implantation by : In-Chin Wu
Download or read book Far-infrared Germanium Photodetectors by Ion Implantation written by In-Chin Wu and published by . This book was released on 1993 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis High Duty Cycle Far-infrared Germanium Lasers by : Danielle Rusell Chamberlin
Download or read book High Duty Cycle Far-infrared Germanium Lasers written by Danielle Rusell Chamberlin and published by . This book was released on 2001 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ion Implanted Ge written by and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ge Blocked Impurity Band (BIB) photoconductors have the potential to replace stressed Ge:Ga photoconductors for far-infrared astronomical observations. A novel planar BIB device has been fabricated in which ion-implanted boron is used to form the blocking and absorbing layers of necessary purity and compensation. The effect of doping in the infrared active layer on the far-infrared photoconductive response has been studied, and the optimum doping concentration is found to be (almost equal to) 4 x 1016 cm−3. Devices doped near this concentration show good blocking characteristics with low dark currents. The spectral response extends to (almost equal to) 45 cm−1, clearly showing the formation of an impurity band. Under low background testing conditions these devices attain a responsivity of 0.12 A/W and NEP of 5.23 x 10−15 W/Hz−12.
Book Synopsis Advanced Far Infrared Detector and Double Donor Studies in Ge by : Christopher Sean Olsen
Download or read book Advanced Far Infrared Detector and Double Donor Studies in Ge written by Christopher Sean Olsen and published by . This book was released on 1994 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Modeling Low Temperature C-V Profiling in Blocked Impurity Band Detectors by :
Download or read book Modeling Low Temperature C-V Profiling in Blocked Impurity Band Detectors written by and published by . This book was released on 2005 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: Silicon Blocked Impurity Band (BIB) detectors are state-of-the-art devices to detect light in the near to mid infrared range (5-40 m). Numerical modeling of BIB detectors is performed using a four-region finite difference approach to study the role of space charge in C-V (capacitance-voltage) profiling of minority carrier doping and the role of blocking layer thickness and minority doping concentration in alternate bias operation. Compensation in the blocking layer is found to play a critical role in determining the net voltage drop in this part of the device under alternate polarity bias. The effect of space charge at the blocking layer/active layer interface on the measured low temperature C-V distribution is modeled as a function of the doping interface between the two layers. The magnitude of the space charge can cause large deviations in the measurement of minority doping concentration from the idealized case which assumes a space-charge free blocking layer and interface. Accurately determining these minority doping concentrations is a crucial step toward solving material growth challenges in proposed far infrared Ge and GaAs devices.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1992 with total page 1572 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2002 with total page 632 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis The Blocked-Impurity-Band Infrared Detector for Use in an Interferometer-spectrometer by : Craig James
Download or read book The Blocked-Impurity-Band Infrared Detector for Use in an Interferometer-spectrometer written by Craig James and published by . This book was released on 1989 with total page 262 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis International Aerospace Abstracts by :
Download or read book International Aerospace Abstracts written by and published by . This book was released on 1999 with total page 1042 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Long Wavelength Infrared Detectors by : Manijeh Razeghi
Download or read book Long Wavelength Infrared Detectors written by Manijeh Razeghi and published by CRC Press. This book was released on 2020-03-09 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This timely work presents a comprehensive overview of the development of new generations of infrared detectors based on artificially synthesized quantum structures. The growth of quantum wells and superlattices is well documents in this volume, as are the principal new superlattice technologies for long wavelength infrared detection. Featuring insightful contributions from researchers working at the "cutting edge" of this exciting field, this volume is sure to become an essential reference for advanced graduate students and researchers alike.
Book Synopsis Government Reports Announcements & Index by :
Download or read book Government Reports Announcements & Index written by and published by . This book was released on 1989 with total page 1120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Detection of Light written by G. H. Rieke and published by Cambridge University Press. This book was released on 1996-06-27 with total page 358 pages. Available in PDF, EPUB and Kindle. Book excerpt: How does a quantum well detector, a silicon BIB or a CCD work? How are heterodyne techniques used in infrared detectors and submillimeter receivers? And how do you specify the performance of any detector system? This volume answers all these questions with an up-to-date review of all the techniques for the detection of radiation. This presentation approaches detectors from the perspective of the underlying physics; and in this way it provides a unified understanding of the detection of radiation in the ultraviolet through to the submillimetre. Clearly worked examples demonstrate the physics involved and problems are provided to increase the reader's knowledge of how each system works. This clearly written and authoritative review of modern detector systems will develop the understanding of final year undergraduate and graduate students, and will provide a valuable reference for professionals in astronomy, engineering and physics.
Author :National Research Council Canada Publisher :Bellingham, Wash. : SPIE--The International Society for Optical Engineering ISBN 13 : Total Pages :236 pages Book Rating :4.3/5 (91 download)
Book Synopsis Far-infrared Science and Technology by : National Research Council Canada
Download or read book Far-infrared Science and Technology written by National Research Council Canada and published by Bellingham, Wash. : SPIE--The International Society for Optical Engineering. This book was released on 1986 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Semiconductor Detector Systems by : Helmuth Spieler
Download or read book Semiconductor Detector Systems written by Helmuth Spieler and published by OUP Oxford. This book was released on 2005-08-25 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Semiconductor sensors patterned at the micron scale combined with custom-designed integrated circuits have revolutionized semiconductor radiation detector systems. Designs covering many square meters with millions of signal channels are now commonplace in high-energy physics and the technology is finding its way into many other fields, ranging from astrophysics to experiments at synchrotron light sources and medical imaging. This book is the first to present a comprehensive discussion of the many facets of highly integrated semiconductor detector systems, covering sensors, signal processing, transistors and circuits, low-noise electronics, and radiation effects. The diversity of design approaches is illustrated in a chapter describing systems in high-energy physics, astronomy, and astrophysics. Finally a chapter "Why things don't work" discusses common pitfalls. Profusely illustrated, this book provides a unique reference in a key area of modern science.
