A simple approach to model the performance of photovoltaic solar modules in operation

Virtuani, Alessandro; Strepparava, Davide; Friesen, Gabi

doi:10.1016/j.solener.2015.07.045

Cited by 16 publications

(4 citation statements)

References 44 publications

(43 reference statements)

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“…For the studied samples of the film PVC based on the structure of CdS/CdTe, there is no significant decrease in efficiency with increasing temperature to 60 °C. The experimentally obtained values of the temperature coefficient of efficiency effectively coincide well with literary sources [10,11], and their significance for the considered single-transition film PVC quite accu-rately correlates with the band gap width of the corresponding absorbing semiconductor material (Table 4). The temperature coefficient of efficiency is proportional to the increase in the band gap width of the base semiconductor material.…”

Section: Results and Its Discussionsupporting

confidence: 76%

Operating Temperature Effect on the Thin Film Solar Cell Efficiency

Зайцев¹,

Kirichenko²,

Khrypunov³

et al. 2019

J. Nano- Electron. Phys.

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The made research results of the dependence of the film photovoltaic converter efficiency on their operating temperature and their comparison are considered in the paper. The physical mechanisms of temperature influence analysis on output, diode and electronic parameters of photovoltaic converters were conducted. The output parameters determination of the flexible photovoltaic converters was carried out by measurement of light current-voltage characteristics by using illuminator based on powerful semiconductor LEDs with different colors for simulated radiation which is close to the standard ground and ultraviolet solar spectrum. For ensuring effective non-destructive switching of the test specimens of the flexible PVC based on cadmium telluride to the measurement circle, the special contact device was developed and used. The main feature of contact device is four separate vertically moving metal probes in form of semi spheres with polished surfaces, which makes it impossible to puncture the PVC electrodes. These probes have possibility of individual positioning of each probe that is carried out with the help of a hard rotary console of variable length attached to the body and can be pressed with a given effort without impact on the frontal and any rear electrodes of the PVC experiments. The efficiency temperature coefficients of the photovoltaic converter, which make up for devices with a CdTe of 0.14 %/C, CuInSe2 -0.36 %/C, amorphous silicon -0.21 %/C were obtained. The analytical processing and analysis of the light diode characteristic effect on the PVC efficiency based on the CdTe showed that the temperature stability of their efficiency is ensured by the diode current density, the incision of which increases by 50 % from 1.9•10 -9 A to 2.7•10 -9 A with the temperature rise from 20 °С to 50 °С. At the same time, it has been established for PVC on the CuInSe and amorphous silicon base that the decrease of short circuit current density, open circuit voltage and fill factor of current-voltage characteristics plays the main role in efficiency reduction with rising temperature.

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Section: Results and Its Discussionsupporting

confidence: 76%

Operating Temperature Effect on the Thin Film Solar Cell Efficiency

Зайцев¹,

Kirichenko²,

Khrypunov³

et al. 2019

J. Nano- Electron. Phys.

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“…While the performance drops for both protective matrices, the decrease is significantly less than for the organic HTMs. Both protective matrices show strikingly similar performances at higher temperatures up to 80 °C, which indicates that the initial decline of about 20% from room temperature to 80 °C may occur independent of the material properties of the polymer matrices and could represent the temperature coefficient for the perovskite cells, from this data being ∼0.33%/°C, similar to that of the thin film photovoltaics based on copper indium gallium (di)selenide (CIGS) . In the temperature range above 80 °C, a more significant drop in efficiency for the PMMA-based HTL is observed that is probably caused by approaching the glass transition temperature of the polymer ( T G = 105 °C).…”

supporting

confidence: 60%

Carbon Nanotube/Polymer Composites as a Highly Stable Hole Collection Layer in Perovskite Solar Cells

et al. 2014

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Organic-inorganic perovskite solar cells have recently emerged at the forefront of photovoltaics research. Power conversion efficiencies have experienced an unprecedented increase to reported values exceeding 19% within just four years. With the focus mainly on efficiency, the aspect of stability has so far not been thoroughly addressed. In this paper, we identify thermal stability as a fundamental weak point of perovskite solar cells, and demonstrate an elegant approach to mitigating thermal degradation by replacing the organic hole transport material with polymer-functionalized single-walled carbon nanotubes (SWNTs) embedded in an insulating polymer matrix. With this composite structure, we achieve JV scanned power-conversion efficiencies of up to 15.3% with an average efficiency of 10 ± 2%. Moreover, we observe strong retardation in thermal degradation as compared to cells employing state-of-the-art organic hole-transporting materials. In addition, the resistance to water ingress is remarkably enhanced. These are critical developments for achieving long-term stability of high-efficiency perovskite solar cells.

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“…More details about the JRC measurement set‐up and its uncertainty can be found in other research . As described in the previous study, ESTI has been accredited since September 1996 according to the EN45001 standard as the first photovoltaic testing laboratory. From 2001 : with the installation of a new indoor laboratory (ISO‐17025 accredited for the characterization of crystalline silicon modules and later of thin‐film devices too), performance measurements have been performed at SUPSI . A Pasan IIIA pulsed solar simulator (Xenon lamp with stable pulse duration of 2 ms) has been in used until recently (2014).…”

Section: Methodsmentioning

confidence: 99%

35 years of photovoltaics: Analysis of the TISO‐10‐kW solar plant, lessons learnt in safety and performance—Part 1

Virtuani

Caccivio

Annigoni

et al. 2019

Progress in Photovoltaics

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The TISO‐10‐kW solar plant, connected to the grid in 1982, is the oldest installation of this kind in Europe. Its history is well documented, and the full set of modules has been tested indoors at regular intervals over the years. After 35 years of operation, we observe an increase in the degradation rates and that the distributions of modules' performances are drastically changing compared with previous years. Two groups of modules can be observed: (a) group 1: 21.5% of the modules show a very modest degradation, described by a Gaussian distribution with mean yearly power degradation of only −0.2%/y. (b) Group 2: 72.9% of the modules form a negatively skewed distribution with a long tail described by mode (−0.54%/y), median (−0.62%/y), and mean (−0.69%/y) values. In earlier years, decreases in performances could strongly be correlated to losses in fill factor (FF). After 35 years, the situation changes and, for a subset of modules, losses in the current (Isc) are superimposed to losses in FF. The reasons for this will become clearer in part 2, where we will present results of a detailed visual inspection on the whole set of modules and will focus on safety aspect too. We conclude that, after 35 years of operation in a temperate climate, approximately 60% (~70% if considering a ± 3% measurement uncertainty) of the modules would still satisfy a warranty criteria that module manufacturers are presently considering to apply to the technology of tomorrow: 35 years of operation with a performance threshold set at 80% of the initial value.

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A simple approach to model the performance of photovoltaic solar modules in operation

Cited by 16 publications

References 44 publications

Operating Temperature Effect on the Thin Film Solar Cell Efficiency

Operating Temperature Effect on the Thin Film Solar Cell Efficiency

Carbon Nanotube/Polymer Composites as a Highly Stable Hole Collection Layer in Perovskite Solar Cells

35 years of photovoltaics: Analysis of the TISO‐10‐kW solar plant, lessons learnt in safety and performance—Part 1

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