Characterization testing of dual junction GaInP/sub 2//GaAs/Ge solar cell assemblies

Brown, Mike R.; Goldhammer, L. J.; Goodelle, G. S.; Lortz, C.U.; Perron, J.N.; Powe, J.S.; Schwartz, Jon A.; Cavicchi, B.T.; Gillanders, M.; Krut, D.D.

doi:10.1109/pvsc.1997.654210

Cited by 7 publications

(4 citation statements)

References 4 publications

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“…In this case, the biocompatibility and large bandwidth of an optical fiber threaded from the head through the body are substantial advantages for the entire prosthetic system, including power delivery by the fiber to the brain implantable microsystem. There have been some reports regarding optical power delivery and data transmission for biomedical implants, but none specifically for neural sensing applications [27,28]. …”

Section: Microsystem Fabricationmentioning

confidence: 99%

An Implantable Neural Sensing Microsystem with Fiber-Optic Data Transmission and Power Delivery

Park

Borton

Kang

et al. 2013

Sensors

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We have developed a prototype cortical neural sensing microsystem for brain implantable neuroengineering applications. Its key feature is that both the transmission of broadband, multichannel neural data and power required for the embedded microelectronics are provided by optical fiber access. The fiber-optic system is aimed at enabling neural recording from rodents and primates by converting cortical signals to a digital stream of infrared light pulses. In the full microsystem whose performance is summarized in this paper, an analog-to-digital converter and a low power digital controller IC have been integrated with a low threshold, semiconductor laser to extract the digitized neural signals optically from the implantable unit. The microsystem also acquires electrical power and synchronization clocks via optical fibers from an external laser by using a highly efficient photovoltaic cell on board. The implantable unit employs a flexible polymer substrate to integrate analog and digital microelectronics and on-chip optoelectronic components, while adapting to the anatomical and physiological constraints of the environment. A low power analog CMOS chip, which includes preamplifier and multiplexing circuitry, is directly flip-chip bonded to the microelectrode array to form the cortical neurosensor device.

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Section: Microsystem Fabricationmentioning

confidence: 99%

An Implantable Neural Sensing Microsystem with Fiber-Optic Data Transmission and Power Delivery

Park

Borton

Kang

et al. 2013

Sensors

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“…Le fonctionnement des systèmes photovoltaïques de concentration 'CPV' à haute efficacité est basé sur l'utilisation des cellules solaires multi jonction à haute efficacité qui sont réalisées par les matériaux semi-conducteurs des groupes III-V comme l'arséniure de gallium AsGa [1][2][3][4][5].…”

Section: Introductionunclassified

Implantation et fonctionnement de la première installation photovoltaïque à haute concentration ‘CPV’ au Maroc

Mrabti,

Loudiyi,

Darhmaoui

et al. 2023

J. Ren. Energies

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Le travail présenté dans cet article concerne l’implantation et le fonctionnement de la première installation prototype photovoltaïque à haute concentration (CPV) au Maroc, réalisée par la société Isofoton. Cette installation, d’une puissance nominale de 30 kilowatts, est implantée à l’Université Al Akhawayn, Ifrane, située à une altitude de 1650 m dans la région du moyen Atlas. Elle est composée de trois suiveurs du soleil à deux axes connectés au réseau électrique national (ONE). Après la description de l’installation et de ses équipements, nous présentons les premiers résultats expérimentaux concernant le fonctionnement électrique de cette centrale, ainsi que sa production énergétique journalière en fonction des conditions météorologiques.

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“…The first commercial satellite that employed this technology was launched in 1997 (HS 601HP), which used solar arrays populated with Spectrolab's dual-junction (DJ) GaInP/GaAs/Ge cells, with beginning of life (BOL) efficiency of 21-22%. 1 Building on this DJ benchmark, triple-junction cells based on the same materials system have improved the performance to a new level. For example, Spectrolab's Improved Triple Junction (ITJ) cells which have been in production for the past 3 years, have BOL efficiency of greater than 26Á5%, providing $ 20-25% more power than the DJ cells.…”

Section: Introductionmentioning

confidence: 99%

Recent advances in high‐efficiencyIII–Vmulti‐junction solar cells for space applications: ultra triple junction qualification

Yoon¹,

Granata

Hébert³

et al. 2005

Progress in Photovoltaics

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Recent advances in Spectrolab's high efficiency III-V multi-junction space solar cells are reported. The latest generation GaInP/GaAs/Ge solar cells under production-the Ultra Triple Junction (UTJ)-have an average efficiency at maximum power of 28Á0% (AM0, 28 C, 135Á3 mW/cm 2 ) at beginning of life (BOL), and 22Á6% at 60 C at end of life (EOL, 15 years in GEO orbit). This represents a 5Á5% relative higher efficiency at EOL, compared with the previous generation Improved Triple Junction (ITJ) cells. The P/P 0 -for 1 MeV electrons after 10 15 cm À2 fluence has also improved to 0Á86, compared with 0Á84 for the ITJ cells. These and other performance results of UTJ solar cells are reviewed in comparison with ITJ solar cells.

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Characterization testing of dual junction GaInP/sub 2//GaAs/Ge solar cell assemblies

Cited by 7 publications

References 4 publications

An Implantable Neural Sensing Microsystem with Fiber-Optic Data Transmission and Power Delivery

An Implantable Neural Sensing Microsystem with Fiber-Optic Data Transmission and Power Delivery

Implantation et fonctionnement de la première installation photovoltaïque à haute concentration ‘CPV’ au Maroc

Recent advances in high‐efficiencyIII–Vmulti‐junction solar cells for space applications: ultra triple junction qualification

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