Photoconductivity spectrum, deformation potentials and effective masses of carriers for the chalcopyrite semiconductor alloy CuIn0.6Ga0.4Se2

Tinoco, T.; Rincón, C.; Quintero, M.; Charlebois, A.

doi:10.1016/0038-1098(93)90540-4

Cited by 3 publications

(2 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The under concentration increased photon flux density does not only influence I sc and U oc (eq. , 1.3), but also the electric conditions in the device start to change, what finally results in different bulk conductivities and screening lengths for electric potentials and shunts . In Figure , the relative changes in U oc are plotted against the logarithm of the light concentration factor for three differently sized lamellar cells out of series C. The U oc ‐trend of a dot‐shaped micro cell with 750‐µm active area radius is also shown for comparison.…”

Section: Resultsmentioning

confidence: 99%

“…Both trends can explain the observed changes in FF and were related first to a light induced increase in conductivity and second to changes in the inner electrical fields of the diode. Both effects are expected and well known for photoactive semiconductors and Cu(In,Ga)Se 2 in particular [9,[30][31][32][33]. It is further to consider, that the finally estimated R s and R p values reflect the sum of different particular single serial and parallel resistances that vary on the material, contacts and geometry used and that may change differently during concentration.…”

Section: Lamellar Microcells At Concentrated Light Test Conditions (Cmentioning

confidence: 86%

See 1 more Smart Citation

Monolithically interconnected lamellar Cu(In,Ga)Se₂ micro solar cells under full white light concentration

Reinhold

Schmid

Greiner

et al. 2015

Progress in Photovoltaics

View full text Add to dashboard Cite

Thin film solar cells already benefit from significant material and energy savings. By using photon management, the conversion efficiency and the power density can be enhanced further, including a reduction of material costs. In this work, micrometer‐sized Cu(In,Ga)Se2 (CIGS) thin film solar cells were investigated under concentrated white light illumination (1–50×). The cell design is based on industrially standardized, lamellar shaped solar cells with monolithic interconnects (P‐scribe). In order to characterize the shunt and serial resistance profiles and their impact on the device performance the cell width was reduced stepwise from 1900 to 200 µm and the P1‐scribe thickness was varied between 45 and 320 µm. The results are compared to macroscopic solar cells in standard geometry and dot‐shaped microcells with ring contacts. Under concentrated white light, the maximal conversion efficiency could be increased by more than 3.8% absolute for the lamellar microcells and more than 4.8% absolute in case of dot‐shaped microcells compared to their initial values at 1 sun illumination. The power density could be raised by a factor of 51 and 70, respectively. But apparently, the optimum concentration level and the improvement in performance strongly depend on the chosen cell geometry, the used contact method and the electrical material properties. It turns out, that the widely used industrial thin film solar cell design pattern cannot simply be adapted to prepare micro‐concentrator CIGS solar modules, without significant optimization. Based on the experimental and simulated results, modifications for the cell design are proposed. Copyright © 2015 John Wiley & Sons, Ltd.

show abstract

Section: Resultsmentioning

confidence: 99%

Section: Lamellar Microcells At Concentrated Light Test Conditions (Cmentioning

confidence: 86%

Monolithically interconnected lamellar Cu(In,Ga)Se₂ micro solar cells under full white light concentration

Reinhold

Schmid

Greiner

et al. 2015

Progress in Photovoltaics

View full text Add to dashboard Cite

show abstract

Red shift of the band gap of Fe doped CuIny Ga1 − y, Se2

1996

View full text Add to dashboard Cite

Alloy composition and temperature dependence of the fundamental absorption edge in CuGaxIn1−xSe2

Lárez

Bellabarba

Rincón

1994

Applied Physics Letters

View full text Add to dashboard Cite

We have proposed a semi-empirical expression for the alloy composition and temperature dependence of the fundamental energy gap in the CuGaxIn1−xSe2 alloy system. A good agreement between theoretical predictions and available experimental data is found. It seems that such semi-empirical expressions are of considerable importance for the analysis of results on new ternary and quaternary compounds and its alloys for which detailed studies based on a more fundamental analysis are not available.

show abstract

Photoconductivity spectrum, deformation potentials and effective masses of carriers for the chalcopyrite semiconductor alloy CuIn0.6Ga0.4Se2

Cited by 3 publications

References 15 publications

Monolithically interconnected lamellar Cu(In,Ga)Se₂ micro solar cells under full white light concentration

Monolithically interconnected lamellar Cu(In,Ga)Se₂ micro solar cells under full white light concentration

Red shift of the band gap of Fe doped CuIny Ga1 − y, Se2

Alloy composition and temperature dependence of the fundamental absorption edge in CuGaxIn1−xSe2

Contact Info

Product

Resources

About

Photoconductivity spectrum, deformation potentials and effective masses of carriers for the chalcopyrite semiconductor alloy CuIn0.6Ga0.4Se2

Cited by 3 publications

References 15 publications

Monolithically interconnected lamellar Cu(In,Ga)Se2 micro solar cells under full white light concentration

Monolithically interconnected lamellar Cu(In,Ga)Se2 micro solar cells under full white light concentration

Red shift of the band gap of Fe doped CuIny Ga1 − y, Se2

Alloy composition and temperature dependence of the fundamental absorption edge in CuGaxIn1−xSe2

Contact Info

Product

Resources

About

Monolithically interconnected lamellar Cu(In,Ga)Se₂ micro solar cells under full white light concentration

Monolithically interconnected lamellar Cu(In,Ga)Se₂ micro solar cells under full white light concentration