Bernd Doll
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View article: Damp‐Heat–Induced Degradation of Lightweight Silicon Heterojunction Solar Modules With Different Transparent Conductive Oxide Layers
Damp‐Heat–Induced Degradation of Lightweight Silicon Heterojunction Solar Modules With Different Transparent Conductive Oxide Layers Open
Lightweight photovoltaic applications are essential for diversifying the solar energy supply. This opens up vast new scenarios for solar modules and significantly boosts the capacity of renewable energy. To ensure high efficiency and stabi…
View article: Aerial Photoluminescence Imaging of Photovoltaic Modules
Aerial Photoluminescence Imaging of Photovoltaic Modules Open
On‐site imaging of modules in photovoltaic (PV) systems requires contact‐free techniques with high throughput and low cost for commercial relevance. Photoluminescence imaging satisfies these requirements, but it has so far not been used fo…
View article: Module-Power Prediction from PL Measurements using Deep Learning
Module-Power Prediction from PL Measurements using Deep Learning Open
The individual causes for power loss of photovoltaic modules are investigated for quite some time. Recently, it has been shown that the power loss of a module is, for example, related to the fraction of inactive areas. While these areas ca…
View article: Deep‐learning‐based pipeline for module power prediction from electroluminescense measurements
Deep‐learning‐based pipeline for module power prediction from electroluminescense measurements Open
Automated inspection plays an important role in monitoring large‐scale photovoltaic power plants. Commonly, electroluminescense measurements are used to identify various types of defects on solar modules, but have not been used to determin…
View article: Joint Superresolution and Rectification for Solar Cell Inspection
Joint Superresolution and Rectification for Solar Cell Inspection Open
Visual inspection of solar modules is an important monitoring facility in\nphotovoltaic power plants. Since a single measurement of fast CMOS sensors is\nlimited in spatial resolution and often not sufficient to reliably detect small\ndefe…
View article: Deep Learning-based Pipeline for Module Power Prediction from EL\n Measurements
Deep Learning-based Pipeline for Module Power Prediction from EL\n Measurements Open
Automated inspection plays an important role in monitoring large-scale\nphotovoltaic power plants. Commonly, electroluminescense measurements are used\nto identify various types of defects on solar modules but have not been used to\ndeterm…
View article: Deep Learning-based Pipeline for Module Power Prediction from EL Measurements
Deep Learning-based Pipeline for Module Power Prediction from EL Measurements Open
Automated inspection plays an important role in monitoring large-scale photovoltaic power plants. Commonly, electroluminescense measurements are used to identify various types of defects on solar modules but have not been used to determine…
View article: Contactless Outdoor Photoluminescence of Silicon Photovoltaic Modules with Large Area Excitation Source
Contactless Outdoor Photoluminescence of Silicon Photovoltaic Modules with Large Area Excitation Source Open
Cost-effective tools for on-site defect detection help to ensure the reliable power production of photovoltaic (PV) plants. On-site examination is essential to minimize PV module damage, electrical yield loss and operation disruption cause…
View article: Predicting Module I-V Curves from Electroluminescence Images with Deep Learning
Predicting Module I-V Curves from Electroluminescence Images with Deep Learning Open
Electroluminescence images have been used to qualify the performance of PV modules. Yet, to assess the status and techno-economic performance of a module in a string, quantitative information is required. In this work, we propose a method …
View article: Quantitative Assessment of the Influence of Camera and Parameter Choice for Outdoor Electroluminescence Investigations of Silicon Photovoltaic Panels
Quantitative Assessment of the Influence of Camera and Parameter Choice for Outdoor Electroluminescence Investigations of Silicon Photovoltaic Panels Open
With the spread of photovoltaics (PV) and increasing diversity in PV panel technology, quantitative comparison of the modules is highly desirable for consistent on-site quality assessment. Electroluminescence imaging reveals many defects, …
View article: 1st International Round Robin on EL Imaging: Automated Camera Calibration and Image Normalisation
1st International Round Robin on EL Imaging: Automated Camera Calibration and Image Normalisation Open
Results from the first international Round Robin on electroluminescence (EL) imaging of PV devices are presented. 17 Laboratories across Europe, Asia and the US measured EL images of ten commercially available modules and five single-cell …
View article: A Benchmark for Visual Identification of Defective Solar Cells in Electroluminescence Imagery
A Benchmark for Visual Identification of Defective Solar Cells in Electroluminescence Imagery Open
In this paper a dataset consisting of 2,426 solar cells extracted from high-resolution electroluminescence (EL) images is used for automated defect probability recognition. The collected images contain both functional and defective solar c…
View article: Non-Stationary Outdoor EL-Measurements with a Fast and Highly Sensitive InGaAs Camera
Non-Stationary Outdoor EL-Measurements with a Fast and Highly Sensitive InGaAs Camera Open
A fast and non-destructive failure inspection is essential to ensure the reliability of PV plants. This might only be achieved by using highly sensitive imaging techniques which can detect local electrical losses in solar modules. Here, EL…
View article: Non-Uniformity Measurements of a Steady State Solar Simulator Using the Hishikawa-Hashimoto Method and Subsequent Improvement
Non-Uniformity Measurements of a Steady State Solar Simulator Using the Hishikawa-Hashimoto Method and Subsequent Improvement Open
A steady state solar simulator has been set up at the ZAE Bayern. The system is meant to be used for the characterization of photovoltaic (PV) of various technologies. In particular, it can be used for pre-conditioning of thin film modules…