National Repository of Grey Literature 3 records found  Search took 0.00 seconds. 
Dark J–V Characteristics Model Of Chalcopyrite-Based Solar Cells
Škvarenina, L’ubomír
An equivalent circuit model of the current parasitic pathways is proposed to describe a behaviour of dark current density–voltage characteristics of chalcopyrite-based solar cells in order to understand a shunting behaviour between the ZnO:Al/i-ZnO/CdS/Cu(In;Ga)Se2/MoSe2/Mo/Ti/TiN layers. The model fitting with a parameter extraction is evaluated for the sample before and after an appearance of a permanent breakdown to prove an accurate response of the proposed model to an ohmic and non-ohmic component shift.
Microstructural Defects of Solar Cells Investigated by a Variety Diagnostics Methods
Škvarenina, L’ubomír
This paper discusses the application of a variety diagnostic methods applicable to the solar cells. More objective results about solar cells quality and reliability are possible to obtain by using a various methods. Diagnostic methods described in this paper are based on a dark and illuminated J–V characteristics, a investigation of noise in a wide range of frequency and a radiation detection at a di erent spectral range, namely by an electroluminescence and a thermography method. These methods are primarily more appropriate for a detection or a localization of microstructure defects when a reverse-bias stress is applied. However, the analysis of a forward-bias conditions is included in an investigation of J–V characteristics as well.
Current Fluctuations of Reverse-Biased Solar
Škvarenina, Ľ.
This paper presents mainly noise diagnostics of pn junctions local defects in a singlecrystalline silicon solar cells structure. Research consists of a non-destructive measurement methodology of reverse-biased junction in solar cells. Diagnostics of defect areas in this documents are based especially on measurement of noise power spectral density, measurement of the radiation emitted from defects in visible range and I-V characteristic measurement.

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