By Matevž Bokalič, Marko Topič
The e-book is dedicated to the spatial characterization of sun cells and PV modules. it truly is written either as a monograph in addition to a succinct advisor for the state of the art spatial characterization strategies and techniques. among the methods mentioned are visible imaging, electro- and photo-luminescence imaging, thermography, and lightweight beam brought on mapping thoughts. Emphasis is given at the luminescence photo acquisition and interpretation because of its nice power. Characterization strategies are observed through simulation tools.
The contents are geared toward a readership of scholars and senior researchers in R&D in addition to engineers in who're beginners to the spatial characterization of both sunlight cells or PV modules. The ideas and techniques awarded herein are according to yet now not constrained to case stories of genuine thin-film PV devices.
Key positive aspects:
assessment of spatially resolved characterization thoughts and accompanying SPICE simulations in photovoltaics
Use of spatially resolved characterization innovations and their combos for the identity of inhomogeneities in small region CdTe and dye-sensitized sunlight cells
Case reviews of electroluminescence imaging of business PV modules (c-Si, CIGS, CdTe, a-Si, tandem and triple junction thin-film-Si)
The contents are geared toward a readership of scholars and senior researchers in R&D in addition to engineers in who're novices to the spatial characterization of both sun cells or PV modules. The recommendations and techniques offered herein are in line with yet now not constrained to case reports of genuine thin-film PV units.
Key positive aspects:
assessment of spatially resolved characterization ideas and accompanying SPICE simulations in photovoltaics
Use of spatially resolved characterization thoughts and their combos for the identity of inhomogeneities in small sector CdTe and dye-sensitized sun cells
Case stories of electroluminescence imaging of industrial PV modules (c-Si, CIGS, CdTe, a-Si, tandem and triple junction thin-film-Si)
Read or Download Spatially Resolved Characterization in Thin-Film Photovoltaics PDF
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Additional resources for Spatially Resolved Characterization in Thin-Film Photovoltaics
A camera for luminescence image acquisition should therefore be sensitive in the NIR, provide a good signal-to-noise ratio (SNR) and at the same time offer high resolution especially for imaging PV modules in a single step. Let us first consider the SNR on a per-pixel basis. 4) from the luminescent radiation signal and will create a number of electrons defined by the camera’s quantum efficiency (QEcam) at the wavelength of the incident photons: QEcam · S. There are three main noise components: shot noise, readout noise, and dark noise.
Imaging techniques are based on a one-step acquisition of local properties of the whole PV device using an imaging device. A single image can be acquired within seconds or minutes. In this case different techniques are defined by the type of excitation and the underlying physics. Such techniques include the following: optical imaging, luminescence imaging, and thermal imaging. In optical imaging a conventional camera is used to acquire the reflected or transmitted light of the DUT while it is illuminated by a defined light source.
Two techniques are distinguished regarding the type of excitation: photoluminescence (PL) for light excitation and electroluminescence (EL) for electrical excitation. 3) to link luminescence intensity with PV performance. Thermal imaging techniques are used to measure the temperature differences caused by varying power dissipation across the DUT. g. for illuminated PV modules operating in short-circuit. For making precise temperature difference measurements in the order of a tenth of a degree a special technique called lock-in thermography (LiT) is used.
Spatially Resolved Characterization in Thin-Film Photovoltaics by Matevž Bokalič, Marko Topič