Title :
High-efficiency (24.6% AM 0) LPE grown AlGaAs/GaAs concentrator solar cells and modules
Author :
Andreev, V.M. ; Kazantsev, A.B. ; Khvostikov, V.P. ; Paleeva, E.V. ; Rumyantsev, V.D. ; Shvarts, M.Z.
Author_Institution :
A.F. Ioffe Physicotech. Inst., Acad. of Sci., St. Petersburg, Russia
Abstract :
Due to the development of the low-temperature (T=450-650°C) LPE and low-temperature Mg-diffusion processes, AlGaAs-GaAs heterostructure solar cells (SCs) with ultra-thin wide-gap “window” layers have been fabricated. A conversion efficiency as high as 24.6% under AM 0 conditions at the concentration ratio of 105 Suns has been measured on SC samples with a one-layer antireflection coating and a prismatic cover. A conceptual design and experimental results on space power application concentrator modules for the developed SCs are also presented. Based on reflective optics (light-weight compound parabolic concentrators (CPCs) or linear-focus parabolic troughs) these modules have to provide the specific parameters of 240 Watt·m-2 and 3 kg·m-2
Keywords :
III-V semiconductors; aerospace testing; aluminium compounds; gallium arsenide; liquid phase epitaxial growth; photovoltaic power systems; semiconductor device testing; semiconductor growth; semiconductor thin films; solar cell arrays; solar cells; solar energy concentrators; space vehicle power plants; 24.6 percent; 450 to 650 C; AlGaAs-GaAs; AlGaAs-GaAs heterostructure solar cells; LPE growth; antireflection coating; application; compound parabolic concentrators; concentrator solar cell modules; conceptual design; linear-focus parabolic troughs; prismatic cover; space power; ultra-thin wide-gap window layer; Crystallization; Gallium arsenide; Gold; Magnetic materials; Optical device fabrication; P-n junctions; Photovoltaic cells; Substrates; Sun; Tellurium;
Conference_Titel :
Photovoltaic Energy Conversion, 1994., Conference Record of the Twenty Fourth. IEEE Photovoltaic Specialists Conference - 1994, 1994 IEEE First World Conference on
Conference_Location :
Waikoloa, HI
Print_ISBN :
0-7803-1460-3
DOI :
10.1109/WCPEC.1994.521634
