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Copper indium gallium diselenide sun angle detectors and MEMS thermal control surfaces for space applications
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Solid State Electronics.
2008 (English)Licentiate thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
Uppsala: Uppsala University, Department of Engineering Sciences , 2008. , 102 p.
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Research subject
Engineering Science with specialization in Electronics
Identifiers
URN: urn:nbn:se:uu:diva-286396OAI: oai:DiVA.org:uu-286396DiVA: diva2:921513
Presentation
2008-05-16, Polhemsalen, 14:13 (English)
Available from: 2016-04-21 Created: 2016-04-20 Last updated: 2016-04-21Bibliographically approved
List of papers
1. Development of a MOEMS sun sensor for space applications
Open this publication in new window or tab >>Development of a MOEMS sun sensor for space applications
2006 (English)In: Sensors & Actuators A, Vol. 130-131, 28-36 p.Article in journal (Refereed) Published
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-23510 (URN)
Available from: 2007-01-30 Created: 2007-01-30 Last updated: 2016-06-22
2. Surfaces with high solar reflectance and high thermal emittance on structured silicon for spacecraft thermal control
Open this publication in new window or tab >>Surfaces with high solar reflectance and high thermal emittance on structured silicon for spacecraft thermal control
Show others...
2008 (English)In: Optical materials (Amsterdam), ISSN 0925-3467, E-ISSN 1873-1252, Vol. 30, no 9, 1410-1421 p.Article in journal (Refereed) Published
Abstract [en]

Presented here is an examination of unstructured and structured (by anisotropic etching), monocrystalline silicon wafers coated with sputter deposited aluminum and chemical vapor deposited silicon dioxide for high solar reflectance and high thermal emittance, respectively. The topography of the samples was characterized with optical and scanning electron microscopy. Optical properties were examined with reflectance and transmittance spectroscopy, partly by usage of an integrating sphere. The measurement results were used to estimate the equilibrium temperature of the surfaces in space. The suitability of the surfaces with high solar reflectance and high thermal emittance to aid in the thermal control of miniaturized, highly integrated components for space applications is discussed. A silicon dioxide layer on a metal layer results in a slightly lower reflectance when compared to surfaces with only a metal layer, but might be beneficial for miniaturized space components and modules that have to dissipate internally generated heat into open space. Additionally, it is an advantage to microstructure the emitting surface for enhanced radiation of excess heat.

Keyword
solar reflectance, thermal emittance, energy transfer, coatings, thermo-optical materials, satellite thermal control
National Category
Engineering and Technology
Identifiers
urn:nbn:se:uu:diva-14767 (URN)10.1016/j.optmat.2007.08.005 (DOI)000256413100012 ()
Available from: 2008-05-05 Created: 2008-05-05 Last updated: 2017-12-11Bibliographically approved
3. Copper indium gallium diselenide thin films for sun angle detectors in space applications
Open this publication in new window or tab >>Copper indium gallium diselenide thin films for sun angle detectors in space applications
2009 (English)In: Thin Solid Films, ISSN 0040-6090, E-ISSN 1879-2731, Vol. 517, no 6, 2063-2068 p.Article in journal (Refereed) Published
Abstract [en]

This work reports on processing, analysis and characterization of copper indium gallium diselenide (CIGS)used as a photosensitive layer for sensors such as sun angle detectors in space applications. CIGS-based solarcell devices with different CIGS layer thicknesses and the pn-junction located on the opposite side of theincidence of light were illuminated through their ultra-thin transparent molybdenum back contacts. Theresults from the current density versus voltage and quantum efficiency measurement indicate that the CIGSabsorber layer may not exceed 750 nm at backside illumination, due to the limited CIGS diffusion length.

Keyword
Sun sensors, Sun angle detectors, Copper indium gallium diselenide, CIGS, Semitransparent back contact, Solar cells, Space, Monolithic integration
National Category
Condensed Matter Physics Engineering and Technology
Research subject
Engineering Science with specialization in Electronics
Identifiers
urn:nbn:se:uu:diva-120637 (URN)10.1016/j.tsf.2008.10.028 (DOI)000263019900037 ()
Available from: 2010-03-15 Created: 2010-03-15 Last updated: 2017-12-12Bibliographically approved

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