Journal ArticleDOI
Detailed balance limit of the efficiency of tandem solar cells
TLDR
In this article, the fundamental limit of the performance of a tandem structure is presented, taking into account the fact that a particular cell is not only illuminated by part of the solar irradiance but also by the electroluminescence of other cells of the set.Abstract:
The fundamental (detailed balance) limit of the performance of a tandem structure is presented. The model takes into account the fact that a particular cell is not only illuminated by part of the solar irradiance but also by the electroluminescence of other cells of the set. Whereas, under 1 sun irradiance, a single solar cell only converts 30% of the solar energy, a tandem structure of two cells can convert 42%, a tandem structure of three cells can convert 49%, etc. Under the highest possible light concentration, these efficiencies are 40% (one cell), 55% (two cells), 63% (three cells), etc. The model also allows us to predict the ideal efficiency of a stack with an infinite number of solar cells. Such a tandem system can convert 68% of the unconcentrated sunlight, and 86% of the concentrated sunlight.read more
Citations
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Journal ArticleDOI
Polymer‐Fullerene Bulk‐Heterojunction Solar Cells
Christoph J. Brabec,Srinivas (Jimmy) Gowrisanker,Jonathan Halls,Darin W. Laird,Shijun Jia,Shawn P. Williams +5 more
TL;DR: An outlook is presented on what will be required to drive this young photovoltaic technology towards the next major milestone, a 10% power conversion efficiency, considered by many to represent the efficiency at which OPV can be adopted in wide-spread applications.
Journal ArticleDOI
Organic and solution-processed tandem solar cells with 17.3% efficiency
Lingxian Meng,Yamin Zhang,Xiangjian Wan,Chenxi Li,Xin Zhang,Yanbo Wang,Xin Ke,Zuo Xiao,Liming Ding,Ruoxi Xia,Hin-Lap Yip,Yong Cao,Yongsheng Chen +12 more
TL;DR: In this article, a semi-empirical model analysis and using the tandem cell strategy to overcome the low charge mobility of organic materials, leading to a limit on the active-layer thickness and efficient light absorption was performed.
Journal ArticleDOI
A Layered Hybrid Perovskite Solar-Cell Absorber with Enhanced Moisture Stability
TL;DR: Two-dimensional hybrid perovskites are used as absorbers in solar cells and the 3D perovskite (MA)[PbI3] (2) has recently been identified as a promising absorber for solar cells, however, its instability to moisture requires anhydrous processing and operating conditions.
Journal ArticleDOI
Solar conversion efficiency of photovoltaic and photoelectrolysis cells with carrier multiplication absorbers
Mark C. Hanna,Arthur J. Nozik +1 more
TL;DR: In this article, the maximum power conversion efficiency for conversion of solar radiation to electrical power or to a flux of chemical free energy for the case of hydrogen production from water photoelectrolysis was calculated.
Journal ArticleDOI
Tabulated values of the Shockley–Queisser limit for single junction solar cells
TL;DR: The detailed balance limit for solar cells presented by Shockley and Queisser in 1961 describes the ultimate efficiency of an ideal p-n junction solar cell illuminated by a black body with a surface temperature of 6000 K as mentioned in this paper.
References
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Journal ArticleDOI
Detailed Balance Limit of Efficiency of p‐n Junction Solar Cells
TL;DR: In this article, an upper theoretical limit for the efficiency of p−n junction solar energy converters, called the detailed balance limit of efficiency, has been calculated for an ideal case in which the only recombination mechanism of holeelectron pairs is radiative as required by the principle of detailed balance.
Journal ArticleDOI
Efficiency of tandem solar cell systems as a function of temperature and solar energy concentration ratio
N.A. Gokcen,J.J. Loferski +1 more
TL;DR: In this article, the authors presented the results of a comprehensive theoretical analysis of tandem photovoltaic solar cells as a function of temperature and solar concentration ratio, where the I-V characteristics of the solar cells were assumed to be governed by the relation I = I 0 ( e qV/AkT − 1) with I 0 = K e −E G /BkT and A = B. The overall efficiencies of tandem cell stacks consisting of as many as 24 cells having energy gaps in the 07 to 36 eV range were calculated for temperatures of 200,
Journal ArticleDOI
A note on the thermodynamics of energy conversion in plants
TL;DR: In this article, the steady state E = S = 0 is considered, where the pumping system p (the hot reservoir) is assumed to deliver entropy and energy at rates S, and En to the working fluid.
Journal ArticleDOI
The limiting efficiency of an edge-illuminated multigap solar cell
TL;DR: In this paper, the theoretical upper limit to the efficiency of an edge-illuminated multigap photovoltaic system was shown to occur as the number of different gaps goes to infinity.
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