III-V Solar Cells and Concentrator Arrays

Alfërov, Zh. I.; Andreev, V. M.; Rumyantsev, V.D.

doi:10.1007/978-3-540-79359-5_8

Cited by 21 publications

(8 citation statements)

References 55 publications

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“…The seemingly mutually exclusive solar cell requirements (1) for ohmic contacts with low contact resistance unavoidably accompanied by high surface recombination velocities and (2) for cell interface boundaries with low surface recombination velocities were solved by the double heterostructure work pioneered by Kroemer and Alferov that began in 1957 [24] . Their work was crucial to the development of semiconductor light -emitting diodes (LEDs) and lasers that require very high current density fl ows between metal contact surfaces with doped semiconductors in a manner that does not limit the lifetimes of nearby excited carriers.…”

Section: Ohmic Contacts and Heterojunction Interfacesmentioning

confidence: 99%

“…Even though Kroemer departed for academia in 1968, his remaining legacy and infl uence at Varian can be seen in the double heterostructure of this champion GaAs solar cell diagrammed in [29,34] . Contemporary, parallel, continuing, and similar GaAs alloy solar cell development work in Russia has been well summarized recently [24] . It also confi ned the GaAs ' s minority carriers to stay near the collecting diode junction region and away from the adjacent front surface ohmic contact with its very high surface recombination velocity for minority carriers.…”

Section: Champion 282% Efficient Gaas and Other Solar Cellsmentioning

confidence: 99%

“…Note that its 0.6 -μ m GaAs cap layer was heavily doped at 5 (10 19 ) cm − 3 . Alferov summarized Russian measurements of similar GaAs technology single -junction cells whose effi ciencies were 26.2% at 1000x, 25% at 2000x and 23% at 5800x concentration values (fi g. 8.4 [24] ). At the 5800x concentration, the V oc had risen to 1.195 V, but the fi ll factor had fallen to 0.79 due to apparent series resistance problems.…”

Section: Dimensions and Doping Levels Of Optimized [33] P -On -N Anmentioning

confidence: 99%

“…At the 5800x concentration, the V oc had risen to 1.195 V, but the fi ll factor had fallen to 0.79 due to apparent series resistance problems. When triple junction cells were exposed to concentrations over 14,000X (fi g. 8.16 [24] ), rather modest increases in opencircuit voltages were observed but with kinks in their I -V curves indicative of their tunnel junctions being driven beyond low loss limits. For further reference at the 1680x maximum effi ciency conditions for the latter device, its V oc was lower at 1.18 V but with a higher FF of 0.87 [36] .…”

Section: Dimensions and Doping Levels Of Optimized [33] P -On -N Anmentioning

confidence: 99%

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Solar Cell Device Physics

Partain¹

2010

Solar Cells and Their Applications

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Section: Ohmic Contacts and Heterojunction Interfacesmentioning

confidence: 99%

Section: Champion 282% Efficient Gaas and Other Solar Cellsmentioning

confidence: 99%

Section: Dimensions and Doping Levels Of Optimized [33] P -On -N Anmentioning

confidence: 99%

Section: Dimensions and Doping Levels Of Optimized [33] P -On -N Anmentioning

confidence: 99%

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Solar Cell Device Physics

Partain¹

2010

Solar Cells and Their Applications

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“…19 Conventional triple junction solar cells typically use macroscopic external optics to provide this concentration effect and increase the efficiency, but nanostructures can inherently concentrate light via optical resonances. [20][21][22][23] These and other effects are motivating work on next generation highefficiency photovoltaics, with semiconductor nanowires being among the most promising candidates.…”

mentioning

confidence: 99%

Au-Cu2O core-shell nanowire photovoltaics

Oener

Mann

Sciacca

et al. 2015

Applied Physics Letters

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Semiconductor nanowires are among the most promising candidates for next generation photovoltaics. This is due to their outstanding optical and electrical properties which provide large optical cross sections while simultaneously decoupling the photon absorption and charge carrier extraction length scales. These effects relax the requirements for both the minority carrier diffusion length and the amount of semiconductor needed. Metal-semiconductor core-shell nanowires have previously been predicted to show even better optical absorption than solid semiconductor nanowires and offer the additional advantage of a local metal core contact. Here, we fabricate and analyze such a geometry using a single Au-Cu2O core-shell nanowire photovoltaic cell as a model system. Spatially resolved photocurrent maps reveal that although the minority carrier diffusion length in the Cu2O shell is less than 1 μm, the radial contact geometry with the incorporated metal electrode still allows for photogenerated carrier collection along an entire nanowire. Current-voltage measurements yield an open-circuit voltage of 600 mV under laser illumination and a dark diode turn-on voltage of 1 V. This study suggests the metal-semiconductor core-shell nanowire concept could be extended to low-cost, large-scale photovoltaic devices, utilizing for example, metal nanowire electrode grids coated with epitaxially grown semiconductor shells.

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High-Efficient Low-Cost Photovoltaics

Petrova‐Koch¹,

Hezel²,

Goetzberger³

2009

Springer Series in Optical Sciences

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The Springer Series in Optical Sciences, under the leadership of Editor-in-Chief William T. Rhodes, Georgia Institute of Technology, USA, provides an expanding selection of research monographs in all major areas of optics: lasers and quantum optics, ultrafast phenomena, optical spectroscopy techniques, optoelectronics, quantum information, information optics, applied laser technology, industrial applications, and other topics of contemporary interest. With this broad coverage of topics, the series is of use to all research scientists and engineers who need up-to-date reference books.The editors encourage prospective authors to correspond with them in advance of submitting a manuscript. Submission of manuscripts should be made to the Editor-in-Chief or one of the Editors. See also www.springer.com/series/624 Editor-in-ChiefWilliam T. Rhodes This work is subject to copyright. All rights are reserved, whether the whole or part of the material is concerned, specifically the rights of translation, reprinting, reuse of illustrations, recitation, broadcasting, reproduction on microfilm or in any other way, and storage in data banks. Duplication of this publication or parts thereof is permitted only under the provisions of the German Copyright Law of September 9, 1965, in its current version, and permission for use must always be obtained from Springer-Verlag. Violations are liable to prosecution under the German Copyright Law.The use of general descriptive names, registered names, trademarks, etc. in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant protective laws and regulations and therefore free for general use.Typesetting by the authors and VTEX, using a Springer L A T E X macro Cover concept: eStudio Calamar Steinen Cover production: WMX Design GmbH, Heidelberg SPIN: 12191949 57/3180/Vtex Printed on acid-free paper 9 8 7 6 5 4 3 2 1 springer.com PrefaceGlobal warming and climate change are a result of excessive emission of green house gases in the recent decades. During the same period we have experienced a dramatic increase in energy demand to support the global industry and a "modern life style". These events, combined with the astronomic increase of the energy prices since the beginning of the 21st century, make it obvious that the global energy mix needs to be changed in favor of clean renewable energy sources. At the same time we must improve the energy efficiency of all technologies.Solar energy conversion, particularly Photovoltaics (PV) represents one of the most interesting and dynamically growing branches of the industry at the moment. Although today the cost of PV is still relatively high, it has dropped considerably in the past years and will continue to do so. A main driving force behind the development of solar energy is its enormous, practically unlimited potential. Unlike other renewable energy sources like wind or water, solar energy can be utilized everywhere on the globe. The cost of PV will have to continue to drop if the...

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III-V Solar Cells and Concentrator Arrays

Cited by 21 publications

References 55 publications

Solar Cell Device Physics

Solar Cell Device Physics

Au-Cu2O core-shell nanowire photovoltaics

High-Efficient Low-Cost Photovoltaics

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