To protect the solar cell against the reverse current, we introduce a novel design of a self-protected thin-film crystalline silicon (c-Si) solar cell using TCAD simulation. The proposed device achieves two distinct functions where it acts as a regular solar cell at forward bias while it performs as a backward diode upon reverse biasing.
It can also be applied to the different types of reverse characteristics found in PV solar cells: those dominated by avalanche mechanisms, and also those in which avalanche is not perceived because they are dominated by shunt resistance or because breakdown takes place out of a safe measurement range.
However, we highlighted that the tandem solar cells' resistance to the reverse bias is not universal but depends on the electrical and optical design of the device. In fact, the protection from silicon is effective if the bottom cell features a breakdown voltage in the range of −40 V along with a high shunt resistance.
Models to represent the behaviour of photovoltaic (PV) solar cells in reverse bias are reviewed, concluding with the proposal of a new model. This model comes from the study of avalanche mechanisms in PV solar cells, and counts on physically meaningful parameters.
In a recent issue of Joule, Xu and co-workers demonstrated that the 2-terminal perovskite/silicon tandem solar cells are phenomenally resilient to reverse bias because most of the negative voltage in these cells is dropped across the silicon sub-cell, which thereby effectively protects the perovskite one.
The improved stability is because more than 95% of the voltage under reverse bias is found to drop across the more robust Si subcell in the perovskite/Si tandem structure, offering reverse-bias protection of the perovskite subcell.
Reverse-Bias Resilience of Monolithic Perovskite/Silicon Tandem Solar Cells
In this work, we demonstrate that by employing a monolithic perovskite/silicon tandem structure, the perovskite subcell can be effectively protected by the silicon subcell under reverse bias, owing to the low reverse-bias diode current of the silicon subcell. As a result, the tested perovskite/silicon tandem devices show superior reverse-bias ...
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Do perovskites need silicon to be stable under reverse …
In a recent issue of Joule, Xu and co-workers 1 demonstrated that the 2-terminal perovskite/silicon tandem solar cells are phenomenally resilient to reverse bias because most of the negative voltage in these cells is dropped …
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Low breakdown voltage IBC solar cells. (a) Typical …
Download scientific diagram | Low breakdown voltage IBC solar cells. (a) Typical structure of an IBC solar cell with low breakdown voltage. (b) Dark I-V reverse characteristics of various IBC ...
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3D modelling of a reverse cell made with improved …
The present work deals with the 3D modelling of reverse and conventional solar cells made with multicrystalline silicon, in order to determine the influence on the photovoltaic properties of the following parameters: base thickness, grain size, minority carrier diffusion length, recombination velocities at the front and back surfaces ...
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Do perovskites need silicon to be stable under reverse bias?
In a recent issue of Joule, Xu and co-workers 1 demonstrated that the 2-terminal perovskite/silicon tandem solar cells are phenomenally resilient to reverse bias because most of the negative voltage in these cells is dropped across the silicon sub-cell, which thereby effectively protects the perovskite one.
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Reverse-bias resilience of monolithic perovskite/silicon …
We experimentally demonstrate that monolithic perovskite/silicon tandem solar cells possess a superior reverse-bias resilience compared with perovskite single-junction solar cells. The majority of the …
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Perovskite Solar Cells (PSCs): Definition, Structure, and Solar Cells ...
Due to the unique advantages of perovskite solar cells (PSCs), this new class of PV technology has received much attention from both, scientific and industrial communities, which made this type of ...
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Reverse-Bias Resilience of Monolithic Perovskite/Silicon Tandem …
In this work, we demonstrate that by employing a monolithic perovskite/silicon tandem structure, the perovskite subcell can be effectively protected by the silicon subcell under reverse bias, …
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Solar cell
A solar cell, also known as a photovoltaic cell (PV cell), is an electronic device that converts the energy of light directly into electricity by means of the photovoltaic effect. [1] It is a form of photoelectric cell, a device whose electrical characteristics (such as current, voltage, or resistance) vary when it is exposed to light.. Individual solar cell devices are often the electrical ...
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Reverse-bias resilience of monolithic perovskite/silicon tandem solar cells
We experimentally demonstrate that monolithic perovskite/silicon tandem solar cells possess a superior reverse-bias resilience compared with perovskite single-junction solar cells. The majority of the reverse-bias voltage is dropped across the more robust silicon subcell, protecting the perovskite subcell from reverse-bias-induced degradation ...
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Efficient and stable inverted MA/Br-free 2D/3D perovskite solar cells ...
The α-to-δ phase transition and lattice defects pose significant challenges to the long-term stability of methylammonium (MA)/bromide (Br)-free formamidinium (FA)-based perovskite solar cells (PSCs). Here we propose an approach for bulk incorporating benzyl carbamimidothioate hydrochloride (BLSCl) to create 2D/3D p
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3D modelling of a reverse cell made with improved multicrystalline ...
The present work deals with the 3D modelling of reverse and conventional solar cells made with multicrystalline silicon, in order to determine the influence on the photovoltaic …
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Instability of p–i–n perovskite solar cells under reverse bias
Under reverse bias conditions, perovskite solar cells have been shown to degrade quickly due to processes that have so far remained elusive. Here, we combine optical, microstructural, and electrical characterization to address the mechanisms governing perovskite solar cell degradation under reverse bias. Three main processes are shown to occur ...
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Design and Optimization of a Self-Protected Thin Film c-Si Solar Cell ...
To protect the solar cell against the reverse current, we introduce a novel design of a self-protected thin-film crystalline silicon (c-Si) solar cell using TCAD simulation. The proposed device achieves two distinct functions where it acts as a regular solar cell at forward bias while it performs as a backward diode upon reverse biasing. The ON ...
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Instability of p–i–n perovskite solar cells under reverse …
Under reverse bias conditions, perovskite solar cells have been shown to degrade quickly due to processes that have so far remained elusive. Here, we combine optical, microstructural, and electrical characterization to address the …
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Combatting temperature and reverse-bias challenges facing …
Although large reverse biases may damage perovskite devices either directly (as for Figures 2 B, 2E, and 2F) or through Joule heating causing perovskite decomposition, 29 small reverse biases causing temporary reductions in current (Figure 2 A) can pin the cells in the reverse-bias condition until night time due to J–V hysteresis. 35, 36 For the latter, although the …
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Efficient and stable inverted MA/Br-free 2D/3D perovskite solar …
The α-to-δ phase transition and lattice defects pose significant challenges to the long-term stability of methylammonium (MA)/bromide (Br)-free formamidinium (FA)-based …
Learn More
Design and Optimization of a Self-Protected Thin Film …
To protect the solar cell against the reverse current, we introduce a novel design of a self-protected thin-film crystalline silicon (c-Si) solar cell using TCAD simulation. The proposed device achieves two distinct …
Learn More
Reverse-bias resilience of monolithic perovskite/silicon tandem solar cells
In this work, we study and compare the reverse-bias stability of perovskite 1-J, Si 1-J, and series-connected monolithic perovskite/Si tandem solar cells using both transient reverse-bias current density-voltage (J-V) scans and long-term reverse voltage biasing. We observe systematically improved stability against reverse bias in perovskite/Si ...
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Solar Cells
Solar cells are semiconductor-based devices primarily, which convert sunlight directly to electrical energy through the photovoltaic effect, which is the appearance of a voltage and current when light is incident on a material.The photovoltaic effect was first reported by Edmond Becquerel in 1839, who observed a voltage and current resulting from light incident …
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Analysis and modelling the reverse characteristic of photovoltaic cells
Models to represent the behaviour of photovoltaic (PV) solar cells in reverse bias are reviewed, concluding with the proposal of a new model. This model comes from the study of avalanche mechanisms in PV solar cells, and counts on physically meaningful parameters. It can be adapted to PV cells in which reverse characteristic is dominated by ...
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Low-breakdown-voltage solar cells for shading-tolerant …
Calcabrini et al. explore the potential of low breakdown voltage solar cells to improve the shading tolerance of photovoltaic modules. They show that low breakdown voltage solar cells can significantly improve the electrical performance of partially shaded photovoltaic modules and can limit the temperature increase in reverse-biased solar cells.
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Reverse-bias resilience of monolithic perovskite/silicon tandem …
In this work, we study and compare the reverse-bias stability of perovskite 1-J, Si 1-J, and series-connected monolithic perovskite/Si tandem solar cells using both transient reverse-bias current density-voltage (J-V) scans and long-term reverse voltage biasing. We …
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Reverse-bias resilience of monolithic perovskite/silicon tandem solar cells
We experimentally demonstrate that monolithic perovskite/silicon tandem solar cells possess a superior reverse-bias resilience compared with perovskite single-junction solar cells. The majority of the reverse-bias voltage is dropped across the more robust silicon subcell, protecting the perovskite subcell from reverse-bias-induced degradation. These results …
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Silicon / Perovskite Tandem Solar Cells with Reverse …
Here, the robustness of perovskite-silicon tandem solar cells to reverse bias electrical degradation down to −40 V is investigated. The two-terminal tandem configuration, with the perovskite coupled to silicon, can …
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Reverse-bias resilience of monolithic perovskite/silicon tandem solar cells
Report Reverse-bias resilience of monolithic perovskite/silicon tandem solar cells Zhaojian Xu,1,5 Helen Bristow,2,5 Maxime Babics,2 Badri Vishal,2 Erkan Aydin,2 Randi Azmi,2 Esma Ugur,2 Bumin K. Yildirim,2 Jiang Liu,2 Ross A. Kerner,1,3 Stefaan De Wolf,2,* and Barry P. Rand1,4,6,* SUMMARY Metal halide perovskites have rapidly enabled a range of high-per-
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Reverse Solar Panels
Scientists are developing a new way to turn escaping nighttime heat into "reverse solar"-style energy. Here''s how it works.
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Silicon / Perovskite Tandem Solar Cells with Reverse Bias Stability ...
Here, the robustness of perovskite-silicon tandem solar cells to reverse bias electrical degradation down to −40 V is investigated. The two-terminal tandem configuration, with the perovskite coupled to silicon, can improve the solar cell resistance to severe negative voltages when the tandem device is properly designed.
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Analysis and modelling the reverse characteristic of photovoltaic …
Models to represent the behaviour of photovoltaic (PV) solar cells in reverse bias are reviewed, concluding with the proposal of a new model. This model comes from the study …
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Double Layer Composite Electrode Strategy for Efficient Perovskite ...
Perovskite solar cells (PSCs) have become the representatives of next generation of photovoltaics; nevertheless, their stability is insufficient for large scale deployment, particularly the reverse bias stability. Here, we propose a transparent conducting oxide (TCO) and low-cost metal composite electrode to improve the stability of PSCs without sacrificing the …
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