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Atomic-Scale Imaging and Spectroscopy of Electroluminescence at Molecular Interfaces
Chemical Reviews, 2017The conversion of electric power to light is an important scientific and technological challenge. Advanced experimental methods have provided access to explore the relevant microscopic processes at the nanometer scale. Here, we review state-of-the-art studies of electroluminescence induced on the molecular scale by scanning tunneling microscopy.
Klaus Kuhnke +3 more
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Module Level Electroluminescence Imaging
2015Electroluminescence imaging is extended to the photovoltaic (PV) module level. Qualitative characterisation of different types of commercially available PV devices is made based on electroluminescence measurements and photographic images. Examples include a conventional crystalline silicon PV module, a chalcopyrite PV module, a cadmium telluride PV ...
Matevž Bokalič, Marko Topič
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Electroluminescent Imaging Systems
The Journal of Photographic Science, 1974AbstractElectroluminescence is the direct conversion of electrical energy into light by a suitable material (phosphor) and it forms the basis of a number of imaging systems capable of displaying an output light image containing a range of continuous-tones. The input image can be formed by infra-red, visible or ultra-violet light, X-rays, electron beams,
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Quantitative Information of Electroluminescence Images
2008The reciprocity between electroluminescence and solar cell quantum efficiency simplifies the simulation and interpretation of electroluminescence spectra. With this reciprocity link, we show how to gain spatially resolved information about recombinatorial and optical parameters from electroluminescence images by using certain types of filters while ...
Helbig, A., Kirchartz, T., Rau, U.
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Electroluminescence Imaging of PV devices: Determining the image quality
2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC), 2015A no-reference method determining the image quality of electroluminescence (EL) images is presented. This allows mapping the estimated intensity based uncertainty originating from the EL image itself. Determining the uncertainty will allow for quantitative comparison and analysis of EL images and will define the minimum criteria of an imaging setup at ...
K. G. Bedrich +3 more
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Absolute Characterization of Solar Cells by Electroluminescence Imaging
2021 IEEE 48th Photovoltaic Specialists Conference (PVSC), 2021In this work [1], we derived a new method to map several optoelectronic parameters of solar cells from voltage dependent electroluminescence imaging. We introduce a calibration factor generally left unknown in the literature. Example is shown on Al-BSF silicon solar cell for which we map the following parameters: diffusion lengths, dopant concentration,
Daniel Ory, Nicolas Paul, Laurent Lombez
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Electroluminescence imaging of organic photovoltaic modules
Applied Physics Letters, 2010We report on electroluminescence (EL) imaging of organic photovoltaic cells and modules with poly(3-hexylthiophene)/[6,6]-phenyl C61 butyric acid methyl ester as semiconductor layer. The dominant EL emission is found in a spectral regime between 1200 and 1400 nm and is identified as the radiative decay of the charge transfer complex formed between the ...
U. Hoyer +6 more
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Image analysis of PV module electroluminescence
Reliability of Photovoltaic Cells, Modules, Components, and Systems X, 2017Electroluminescence imaging can be used as a non-invasive method to spatially assess performance degradation in photovoltaic (PV) modules. Cells, or regions of cells, that do not produce an infra-red luminescence signal under electrical excitation indicate potential damage in the module.
Barrett G. Potter +3 more
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Comparison of electroluminescence image capture methods
2016 IEEE 43rd Photovoltaic Specialists Conference (PVSC), 2016In the field of photovoltaics, electroluminescence (EL) imaging has proven useful in determining the degradation of solar panels, primarily through use of expensive equipment within a confined lab setting. This study explored the potential of conducting EL imaging using relatively inexpensive equipment. Factors that heavily influenced the quality of EL
Britny P. Lockridge +2 more
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Estimation of Shunt Resistance by Electroluminescence Imaging
2014In the present work, an approach has been presented for estimation of the quantitative shunt resistance values of linear shunts in crystalline silicon solar cells by electroluminescence imaging. In this method, electroluminescence intensity is related with the actual shunt value considering the voltage and current across the shunt.
Roy, S., Somasundaran, P., Gupta, R.
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