The temperature dependence of the characteristics of crystalline-silicon-based heterojunction solar cells

Sachenko, A. V.; Kryuchenko, Yu. V.; Kostylyov, V. P.; Korkishko, R.M.; Sokolovskyi, I.O.; Абрамов, А.; Abolmasov, S. N.; Andronikov, D. A.; Bobyl, A. V.; Panaĭotti, I. E.; Теруков, Е. И.; Titov, A. S.; Shvarts, М. Z.

doi:10.1134/s1063785016030305

Cited by 8 publications

(3 citation statements)

References 4 publications

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“…However, increasing the TSM covered area will lower light power density, and hence decrease I SC . [46][47][48][49][50][51][52][53] Therefore, this area ratio will have to be further optimized to achieve well-retained PCE and power for prolonged solar irradiation time. The high AVT values of TSM thin films are associated with their optical characteristics that all compounds and hybrids exhibit the saddle-like or U-shaped spectra with minimums in the visible region which allow for a wider frequency range of solar light to pass TSMs for generating electron-hole pairs.…”

Section: Discussionmentioning

confidence: 99%

Enhanced Silicon Photovoltaic Efficiency by Solar Light Spectral Modulation via Photonically Tuned Porphyrin–Iron Oxide Hybrid Thin Films

et al. 2023

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The temperature dependency of photovoltaic power conversion efficiency (PCE) has been a key challenge to solar applications due to intrinsic processes. Herein, an alternative strategy is developed by modulating the solar light spectrum with a series of photonic hybrids. Transparent thin films are synthesized with the solutions of porphyrin compounds and iron oxides which exhibit strong absorptions in the UV and IR regions. These spectral modulating thin films are photonically tuned via compositional optimization to absorb photons near 400 nm and above 1127 nm from solar spectrum to reduce thermalization and sub‐bandgap absorption. These spectral modulators are applied in a particular configuration above a commercial silicon panel to partially filter the simulated solar light. The PCE of the silicon panel suffers a significant decrease due to temperature increase from 22.9 to 92.9 °C after 60 min solar irradiation, resulting in a PCE decrease from 25.1% to 16.3%. With the transparent spectral modulators, upon solar irradiation for 60 min, the maximum PCE has maintained at 20.5%. The mechanisms of PCE enhancement are identified based on reduced thermalization and sub‐bandgap absorption.

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Section: Discussionmentioning

confidence: 99%

Enhanced Silicon Photovoltaic Efficiency by Solar Light Spectral Modulation via Photonically Tuned Porphyrin–Iron Oxide Hybrid Thin Films

et al. 2023

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“…Focusing first on the decrease in VOC; the effect is well known and is not related to heterostructures per se [42]. Basic equations for an illuminated p-n junction show that the decrease in VOC at increased temperature is related to increased intrinsic carrier concentration which affects minority carrier concentration in the doped layers [5,43].…”

Section: Analysis Of the Cumulative Effects Of Temperaturedependant P...mentioning

confidence: 99%

Opto-Electronics Review

Balent,

Topič,

Krč

2022

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Effects of temperature variation on the performance of silicon heterojunction solar cells are studied using opto-electrical simulations. It is shown that the low-temperature cell efficiency is determined by the fill factor, while at high temperatures it depends on the open-circuit voltage. Simulations revealed that the low-temperature drop in the fill factor is caused by poor tunnelling, in particular at the ITO/p-a-Si:H heterojunction. The authors link this drop in fill factor to a low maximum-power-point voltage and show how poor tunnelling is reflected in the charge redistribution determining the device voltage. The effect of the contact work function on temperature behaviour of efficiency by varying the electron affinity of ITO layers has been demonstrated. It was also demonstrated that increasing the electron affinity of ITO on the p-side minimises the work function mismatch, leading to significant improvements in efficiency, especially at low temperatures, while optimisation on the n-side results in marginal improvements over the entire temperature range. In addition to the cumulative effects of the temperature-dependent parameters, their individual contributions to the efficiency were also investigated. Moreover, it was presented that the thermal energy (kT) determines the efficiency temperature behaviour, while other parameters play only a minor role. This paper shows how temperature variations affect device performance parameters.

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“…These effects result in a nonlinear FF behavior with respect to the temperature. When cooling the solar cell, FF stops linearly increasing at a certain temperature, eventually leading to an FF maximum and a subsequent decrease at low temperature [19], [21]- [23]. Many SHJ solar cells suffer from such thermally activated R s already at 25 °C, typically leading to a modest FF below 80% which was for long a ceiling value [24]- [26].…”

Section: Introductionmentioning

confidence: 99%

Optimized Design of Silicon Heterojunction Solar Cells for Field Operating Conditions

Cattin¹,

Dupré²,

Aïssa³

et al. 2019

IEEE J. Photovoltaics

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Solar modules are currently characterized at standard test conditions (STC), defined at 1000 W/m 2 and 25°C. However, solar modules in actual outdoor operating conditions typically operate at lower illumination and higher temperature than STC, which significantly affects their performance ratio (average harvesting efficiency over efficiency in STC). Silicon heterojunction (SHJ) technology displays both good temperature coefficient and good low-illumination performances, leading to outstanding performance ratios. We investigate here SHJ solar cells that use a-SiC x (n) layer as front doped layer with different carbon contents under different climates conditions. Adding carbon increases transparency but also resistive losses at room temperature (compared with carbon-free layers), leading to a significant decrease in efficiency at STC. We demonstrate that despite this difference at STC, the difference in energy harvesting efficiency is much smaller in all investigated climates. Furthermore, we show that a relative gain of 0.4%-0.8% in harvesting efficiency is possible by adding a certain content of carbon in the front (n) layer, compared with carbon-free cells optimized for STC.

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The temperature dependence of the characteristics of crystalline-silicon-based heterojunction solar cells

Cited by 8 publications

References 4 publications

Enhanced Silicon Photovoltaic Efficiency by Solar Light Spectral Modulation via Photonically Tuned Porphyrin–Iron Oxide Hybrid Thin Films

Enhanced Silicon Photovoltaic Efficiency by Solar Light Spectral Modulation via Photonically Tuned Porphyrin–Iron Oxide Hybrid Thin Films

Opto-Electronics Review

Optimized Design of Silicon Heterojunction Solar Cells for Field Operating Conditions

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