Copper inclusion and migration from the back contact in CdTe solar cells

Corwine, Caroline; Pudov, A.O.; Gloeckler, Markus; Demtsu, S.H.; Sites, James R.

doi:10.1016/j.solmat.2004.02.005

Cited by 96 publications

(80 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The difference observed between the model-determined fit and the actual J-V curve after 722 h of stress (T = 125 ºC, Voc bias, 1-sun illumination) is believed to reveal an additional voltage-dependent loss mechanism (not present at t=0) beyond recombination as represented by equations (3) and (4).…”

Section: Figure 10 Voltage-dependent Collectionmentioning

confidence: 98%

“…Note that resistive contributions for both effectively go to zero at Voc where J = 0 in equations (3) and (4). The voltage, V, at which JQNR exceeds JSCR, is given by the relation:…”

Section: J-v Curve Modelingmentioning

confidence: 99%

“…The effects of back contact and processes on cell durability have been discussed for example in [3][4][5]. More recently, the detrimental effects of localized shunts [6], the general effects of film micrononuniformities [7], and the effect of cell-fabrication processing through formal design-of-experiments methodologies [8] have been reported.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

The use of 2nd and 3rd level correlation analysis for studying degradation in polycrystalline thin-film solar cells

Albin

Cueto

Demtsu³

et al. 2010

2010 35th IEEE Photovoltaic Specialists Conference

View full text Add to dashboard Cite

The correlation of stress-induced changes in the performance of laboratory-made CdTe solar cells with various 2 nd and 3 rd level metrics is discussed. The overall behavior of aggregated data showing how cell efficiency changes as a function of open-circuit voltage (Voc), shortcircuit current density (Jsc), and fill factor (FF) is explained using a two-diode, PSpice model in which degradation is simulated by systematically changing model parameters. FF shows the highest correlation with performance during stress, and is subsequently shown to be most affected by shunt resistance, recombination and in some cases voltage-dependent collection. Large decreases in Jsc as well as increasing rates of Voc degradation are related to voltage-dependent collection effects and catastrophic shunting respectively. Large decreases in Voc in the absence of catastrophic shunting are attributed to increased recombination. The relevance of capacitancederived data correlated with both Voc and FF is discussed.

show abstract

Section: Figure 10 Voltage-dependent Collectionmentioning

confidence: 98%

“…Note that resistive contributions for both effectively go to zero at Voc where J = 0 in equations (3) and (4). The voltage, V, at which JQNR exceeds JSCR, is given by the relation:…”

Section: J-v Curve Modelingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The use of 2nd and 3rd level correlation analysis for studying degradation in polycrystalline thin-film solar cells

Albin

Cueto

Demtsu³

et al. 2010

2010 35th IEEE Photovoltaic Specialists Conference

View full text Add to dashboard Cite

show abstract

“…In addition to considerable research addressing efficiency, recent work has focused on the intrinsic durability of these thin film semiconductor devices. The effects of back contact and doping strategies have been heavily researched for example [3,4,5]. This is driven by the inherent difficulty in fabricating ohmic contacts on wide band gap, p-type CdTe.…”

Section: Introductionmentioning

confidence: 99%

“…Most laboratory and industrial cells use tinoxide (SnO 2 ) for these layers, though there is considerable interest in more advanced stannate materials (Cd 2 SnO 4 and ZnSnO x ). Once transmitted through the glass/TCO/buffer superstrate, light is then absorbed in the n-CdS/p-CdTe heterojunction structure which provides the field necessary for separating photo-generated carriers.…”

Section: Introductionmentioning

confidence: 99%

Correlations of capacitance-voltage hysteresis with thin-film CdTe Solar cell performance during accelerated lifetime testing

Albin

Cueto²

2010

2010 IEEE International Reliability Physics Symposium

View full text Add to dashboard Cite

Abstract-In this paper we present the correlation of CdTe solar cell performance with capacitance-voltage hysteresis, defined presently as the difference in capacitance measured at zero-volt bias when collecting such data with different pre-measurement bias conditions. These correlations were obtained on CdTe cells stressed under conditions of 1-sun illumination, open-circuit bias, and an acceleration temperature of approximately 100 ºC.

show abstract

State‐of‐the‐Art of Nanostructures in Solar Energy Research

Sagadevan¹

2014

Advanced Energy Materials

View full text Add to dashboard Cite

The world's major energy sources are non-renewable and are faced with an ever-increasing demand, and hence are not expected to last long. Besides being non-renewable, these sources include mainly fossil fuels, and contribute tremendously to the perennial problem of global warming. The serious depletion and pollution problems of the above energy sources have made the international community focus attention on alternative sources of energy, especially solar energy, which appears highly promising. Nanostructure-based solar energy is attracting signifi cant attention as a possible candidate for achieving drastic improvement in photovoltaic energy conversion effi ciency. Although such solar energy is expected to be more expensive, there is a growing need for effi cient and lightweight solar cells in aerospace and related industries. It is certain to rule the energy sector when break-even, of high performance is achieved and its cost becomes comparable with that of other energy sources. Various approaches have been proposed to enhance the effi ciency of solar cells. Applications of nanotechnology help us to design solar devices more economically. Nanophotovoltaic cells are used to create cost, effective, effi cient, solar energy storage systems or solar energy on a large scale. Nanostructured materials contain structures with dimensions in that scale; they include polycrystalline materials with nanometer-sized crystallites, materials with surface protrusions spatially separated by a few nanometers granular or porous materials with grain sizes in the nanometer range or nanometer-sized metallic clusters embedded in a dielectric matrix. The motivation for using nanostructured materials emerges from their specifi c physical and chemical properties. Enhancing the regular crystalline

show abstract

Copper inclusion and migration from the back contact in CdTe solar cells

Cited by 96 publications

References 9 publications

The use of 2<sup>nd</sup> and 3<sup>rd</sup> level correlation analysis for studying degradation in polycrystalline thin-film solar cells

The use of 2<sup>nd</sup> and 3<sup>rd</sup> level correlation analysis for studying degradation in polycrystalline thin-film solar cells

Correlations of capacitance-voltage hysteresis with thin-film CdTe Solar cell performance during accelerated lifetime testing

State‐of‐the‐Art of Nanostructures in Solar Energy Research

Contact Info

Product

Resources

About