Lauwaert, Johan

Van Puyvelde, Lisanne

Vrielinck, Henk

English

Ghent University Academic Bibliography

Evolution towards thin film:Si solar cell absorbs relatively poor  thick absorber needed (~100  µm)CuInGaSe2 material has high absorption coefficient  thin absorber (~2 µm)Advantage: lower cost, flexible cellResearch methods:Optimization of thin film solar cells through defect characterization L. Van Puyvelde, J. Lauwaert, H. VrielinckGhent University, Department of Solid State Sciences Defects in SemiConductorsKrijgslaan 281-S1, 9000 Gent, BelgiumConclusion: by controlling defects in thin film solar cells the efficiency can be enhanced. Need for solar cells:  space research, oil crisis, cleaner energy, stabler energyProblem: defects in absorber lattice reduce efficiency  Research DiSC: defect characterization Deep Level Transient Spectroscopymeasure capacitance transient after volgage pulse for different temperature deep defects, contact signalPhotoluminescencemeasure light of radiative recombination when cell is illuminated shallow defects0.9 1 1.1 1.200.20.40.60.81E(eV)counts (a.u.)λexci= 550nm   T= 5.0 KT= 8.0 KT= 10.0 KT= 15.0 KT= 20.0 KT= 25.0 KT= 30.0 KT= 40.0 KT= 50.0 KT= 60.0 KT= 70.0 KT= 80.0 KT= 90.0 KT= 150.0 K0 50 100 150 200 250 300-0.12-0.08-0.040T (K)dlts signal b1 (pF)  tw 0,5stw 0,05stw 0,005s

Optimization of thin film solar cells through defect characterization

https://biblio.ugent.be/publication/4101238/file/4101247.pdf

Optimization of thin film solar cells through defect characterization

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Ghent University Academic Bibliography