Loss analysis and improvements of industrially fabricated Cz-Si solar cells by means of process and device simulations

Steingrube, S.; Wagner, Hannes; Hannebauer, Helge; Gatz, Sebastian; Chen, R.; Dunham, Scott T.; Dullweber, Thorsten; Altermatt, Pietro P.; Brendel, Rolf

doi:10.1016/j.egypro.2011.06.134

Cited by 11 publications

(3 citation statements)

References 15 publications

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“…If LID is not taken into account, then the optimal efficiency can be achieved with a base resistivity as low as 0.7 Ωcm and a comparably wide spacing of two rear contacts per front grid finger. Implementation of the lifetime and injection behavior change due to LID into the simulation is accomplished in a similar way to Steingrube et al [22], but with a focus on the industrial PERC design. In the LID case, the post-degradation lifetime is not fixed, but obtained by applying Bothe's empirical formula [23]:…”

Section: Discussionmentioning

confidence: 99%

Design considerations for industrial rear passivated solar cells

Lauermann

Fröhlich

Hahn

et al. 2012

2012 38th IEEE Photovoltaic Specialists Conference

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In this work, the solar cell development issues arising by adding a dielectric rear side passivation to a standard screen-printing process are discussed with deposited Al type Cz-Si as an example. The influence of several design parameters is assessed in simulation and experiment and an optimization strategy is presented. These parameters include optical properties of the cell, like the choice of dielectric layer thickness and wafer surface roughness, parameters that influence the passivation quality like the temperature of the co in a belt furnace as well as electrical parameters like contact geometry, contact spacing and base resistivity. Their influence on the three efficiency-determining quantities, V OC outlined. Special attention is paid to minimizing the inevitable loss in FF in a PERC design.Index Terms -dielectric films, finite element methods, photovoltaic cells, semiconductor device manufacture,

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Section: Discussionmentioning

confidence: 99%

Design considerations for industrial rear passivated solar cells

Lauermann

Fröhlich

Hahn

et al. 2012

2012 38th IEEE Photovoltaic Specialists Conference

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“…1 (right side). Thereby, we separate the remaining recombination losses into front, rear and base contributions at the different operating conditions: short-circuit, maximum power point (MPP) and open-circuit [7].…”

Section: Loss Analysismentioning

confidence: 99%

Simulation based Development of Industrial PERC Cell Production beyond 20.5% Efficiency

Fischer¹,

Strauch²,

Weber³

et al. 2014

Energy Procedia

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“…On the other hand, several works have proved the usefulness of TCAD numerical simulations in order to study the physical and electrical mechanisms limiting the performance of solar cells [3][4][5][6][7][8]. For this reason, in this paper we will investigate the impact of VIA resistance, separation region and busbar width by means of numerical simulations.…”

Section: Introductionmentioning

confidence: 99%

TCAD numerical simulation of Metal Wrap Through solar cell

Magnone

Fiegna

Sangiorgi

et al. 2013

2013 IEEE International Conference of Electron Devices and Solid-State Circuits

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Metal Wrap Through (MWT) solar cell represents a type of back-contact solution which allows to improve the efficiency of conventional silicon photovoltaic (PV) cells. In this work we use TCAD numerical simulations to investigate the performance of MWT cells. The impact of critical parameters, such as the resistance of VIA, the separation region and the busbar width is analyzed. The study of the main figures of merit under illumination and in dark condition allows to understand the physical mechanisms which limit the conversion efficiency.

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Loss analysis and improvements of industrially fabricated Cz-Si solar cells by means of process and device simulations

Cited by 11 publications

References 15 publications

Design considerations for industrial rear passivated solar cells

Design considerations for industrial rear passivated solar cells

Simulation based Development of Industrial PERC Cell Production beyond 20.5% Efficiency

TCAD numerical simulation of Metal Wrap Through solar cell

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