Increase in external quantum efficiency of encapsulated silicon solar cells from a luminescent down-shifting layer

2009 ◽  
Vol 17 (3) ◽  
pp. 191-197 ◽  
Author(s):  
Keith R. McIntosh ◽  
Gay Lau ◽  
James N. Cotsell ◽  
Katherine Hanton ◽  
Derk L. Bätzner ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Silicon Solar Cells

Model-based Quantitative Assessment of Crystallinity and Parasitic Absorption in Microcrystalline Silicon Solar Cells

2012 ◽  
Vol 1426 ◽  
pp. 383-387
Author(s):  
Thomas Lanz ◽  
Corsin Battaglia ◽  
Christophe Ballif ◽  
Beat Ruhstaller
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Light Scattering ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Quantitative Assessment ◽  
Silicon Solar Cells ◽  
Normalization Procedure ◽  
Microcrystalline Silicon ◽  
Scattering Model

ABSTRACTWe investigate the influence of the crystallinity of the absorber layer and parasitic absorption in the doped layers and electrodes on the external quantum efficiency and reflection of microcrystalline silicon (μc-Si:H) solar cells. Using an optical light scattering model we systematically study variations in the crystallinity and validate a simple normalization procedure that allows assessing the gains that can be achieved by reducing the parasitic absorption. The optimization potential is demonstrated with solar cell samples with increased crystallinity and eliminated parasitic absorption.

scholarly journals Key parameters of textured silicon solar cells of 26.6% photoconversion efficiency

2021 ◽  
Vol 24 (02) ◽  
pp. 175-184
Author(s):  
A.V. Sachenko ◽  
◽  
V.P. Kostylyov ◽  
R.M. Korkishko ◽  
V.M. Vlasyuk ◽  
...  
Keyword(s):  
Absorption Spectrum ◽  
Solar Cells ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
High Efficiency ◽  
Silicon Solar Cells ◽  
Photoconversion Efficiency ◽  
Deep Impurity ◽  
Wave Part ◽  
Long Wave

A new approach to modeling the parameters of high efficiency textured silicon solar cells (SCs) has been presented. Unlike conventional optimization formalisms, our approach additionally includes such important factors as the non-radiative Auger recombination of excitons via deep impurity levels as well as electron-hole pairs recombination in the space charge region. A simple phenomenological expression offered by us earlier for the external quantum efficiency of the textured silicon solar cells with account of the photocurrent in the long-wave part of the absorption spectrum has been also used. Applying this approach, the key parameters of textured silicon SCs, namely: short-circuit current, open-circuit voltage and photoconversion efficiency, have been theoretically determined. The proposed formalism allows calculating the thickness dependence of photoconversion efficiency, which is in good agreement with the experimental results obtained for the heterojunction SCs with the record photoconversion efficiency of 26.6%. The offered approach and the results of applying this phenomenological expression for the external quantum efficiency of the photocurrent in the long-wave part of the absorption spectrum can be used to optimize the characteristics of high efficiency textured SCs based on monocrystalline silicon.

A large-area luminescent downshifting layer containing an Eu3+ complex for crystalline silicon solar cells

2020 ◽  
Vol 49 (15) ◽  
pp. 4725-4731
Author(s):  
Daqing Yang ◽  
Haiduo Liang ◽  
Yujie Liu ◽  
Man Hou ◽  
Liping Kan ◽  
...  
Keyword(s):  
Solar Cells ◽  
Solar Cell ◽  
Polyvinyl Alcohol ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Crystalline Silicon ◽  
Silicon Solar Cells ◽  
Large Area ◽  
Crystalline Silicon Solar Cells ◽  
Si Solar Cell

We present a large-area luminescent down-shifting layer consists of polyvinyl alcohol embedding a newly synthesized ternary Eu3+ complex. C-Si solar cell coated with this layer displayed an enhancement of ~15% in external quantum efficiency.

Understanding the External Quantum Efficiency of Organic Homo-Tandem Solar Cells Utilizing a Three-Terminal Device Architecture

2015 ◽  
Vol 5 (22) ◽  
pp. 1501019 ◽  
Author(s):  
Daniel Bahro ◽  
Manuel Koppitz ◽  
Adrian Mertens ◽  
Konstantin Glaser ◽  
Jan Mescher ◽  
...  
Keyword(s):  
Solar Cells ◽  
Quantum Efficiency ◽  
External Quantum Efficiency ◽  
Tandem Solar Cells ◽  
Terminal Device ◽  
Device Architecture
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