Determination of the subcell photovoltage in multijunction solar cells via voltage-dependent capacitance analysis

2011 ◽  
Vol 98 (25) ◽  
pp. 251106 ◽  
Author(s):  
R. Hoheisel ◽  
M. Schachtner ◽  
E. Stämmler ◽  
A. W. Bett
Keyword(s):  
Solar Cells ◽  
Multijunction Solar Cells ◽  
Voltage Dependent

scholarly journals A Computationally Efficient Multidiode Model for Optimizing the Front Grid of Multijunction Solar Cells under Concentration

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Chris H. van de Stadt ◽  
Pilar Espinet Gonzalez ◽  
Harry A. Atwater ◽  
Rebecca Saive
Keyword(s):  
Solar Cells ◽  
Operating Conditions ◽  
Design Parameters ◽  
Computationally Efficient ◽  
Fast Determination ◽  
Wide Range ◽  
Multijunction Solar Cells ◽  
Efficiency Increase ◽  
Light Concentration

We have developed a computationally efficient simulation model for the optimization of redirecting electrical front contacts for multijunction solar cells under concentration, and we present its validation by comparison with experimental literature results. The model allows for fast determination of the maximum achievable efficiency under a wide range of operating conditions and design parameters such as the contact finger redirecting capability, period and width of the fingers, the light concentration, and the metal and emitter sheet resistivity. At the example of a state-of-the-art four-junction concentrator solar cell, we apply our model to determine ideal operating conditions for front contacts with different light redirection capabilities. We find a 7% relative efficiency increase when enhancing the redirecting capabilities from 0% to 100%.

High-Speed Quantum Efficiency Determination of Multijunction Solar Cells

2018 ◽  
Vol 8 (1) ◽  
pp. 333-341
Author(s):  
Thomas Missbach ◽  
Simon Andreas Dengler ◽  
Gerald Siefer ◽  
Andreas W. Bett
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
High Speed ◽  
Multijunction Solar Cells ◽  
Efficiency Determination

Photoelectric determination of the series resistance of multijunction solar cells

2012 ◽  
Vol 46 (8) ◽  
pp. 1051-1058 ◽  
Author(s):  
M. A. Mintairov ◽  
V. V. Evstropov ◽  
N. A. Kalyuzhnyi ◽  
C. A. Mintairov ◽  
N. Kh. Timoshina ◽  
...  
Keyword(s):  
Solar Cells ◽  
Series Resistance ◽  
Multijunction Solar Cells

scholarly journals К 125-летию со дня рождения лауреата Нобелевской премии академика Николая Николаевича Семенова Архитектура мезы и эффективность InGaP/Ga(In)As/Ge солнечных элементов

2021 ◽  
Vol 91 (7) ◽  
pp. 1067
Author(s):  
В.С. Калиновский ◽  
Е.В. Контрош ◽  
Е.А. Гребенщикова ◽  
В.М. Андреев
Keyword(s):  
Solar Cells ◽  
Side Surface ◽  
Single Step ◽  
Diffusion Region ◽  
Mesa Structure ◽  
Photoresist Mask ◽  
Multijunction Solar Cells ◽  
Mechanical Separation

It has been shown that the mesa architecture and achieved quality of the mesa sidewall of concentrator multijunction solar cells ensured increasing their efficiency up to 36.7% at the sunlight concentration before 100 (AMO; 0.136W/cm²). Creation of the mesa structure architecture with following separation of epitaxial plates of monolithic InGaP/GaAs/Ge nanoheterostructure into chips was carried out by single step chemical wet etching in the HBr:H2O2:H2O (8:1:100) through a photoresist mask to the depth of 12-18µm. Conditions of single step etching, which ensure formation of a smooth and even side surface of the InGaP/Ga(In)As/Ge nanoheterostructure mesa containing different in composition and thickness layers have been determined. Determination of the activation energy has shown that etching occurs in the diffusion region of the heterogeneous process. In raising etchant temperature from 2 to 36˚C, a change of the tilt angle in the Ge substrate region from 4.5 to 25 angular degrees is observed, what allows optimizing the amount of concentrator solar cells and their quality at final mechanical separation of the epitaxial plate into chips.

Determination of subcell I-V characteristics of multijunction solar cells using optical coupling

2015 ◽  
Vol 24 (6) ◽  
pp. 760-773 ◽  
Author(s):  
Helmut Nesswetter ◽  
Norman R. Jost ◽  
Paolo Lugli ◽  
Andreas W. Bett ◽  
Claus G. Zimmermann
Keyword(s):  
Solar Cells ◽  
Optical Coupling ◽  
Multijunction Solar Cells

scholarly journals Theoretical and experimental assessment of thinned germanium substrates for III–V multijunction solar cells

2020 ◽  
Vol 28 (11) ◽  
pp. 1097-1106
Author(s):  
Iván Lombardero ◽  
Mario Ochoa ◽  
Naoya Miyashita ◽  
Yoshitaka Okada ◽  
Carlos Algora
Keyword(s):  
Solar Cells ◽  
Experimental Assessment ◽  
Multijunction Solar Cells ◽  
Germanium Substrates
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