Work function engineering to enhance open-circuit voltage in …
Enhancement of open-circuit voltage (Voc) is an effective way to improve power conversion efficiency (PCE) of the perovskite solar cells (PSCs).Theoretically, work function engineering of TiO 2 electron transport layer can reduce both the loss of Voc and current hysteresis in PSCs. In this work, two-dimensional g-C 3 N 4 nanosheets were adopted to …
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Photo-ferroelectric perovskite interfaces for boosting V OC in
Photovoltaic devices suffer from unavoidable open circuit voltage losses. …
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Enhancing the Open-Circuit Voltage of Perovskite Solar Cells by ...
In this work, we demonstrate how the incorporation of molecular dipoles into …
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High Open-circuit Voltage of Perovskite Solar Cells: …
Perovskite solar cells (PSCs) excel in achieving high open-circuit voltages (VOC) for narrow bandgaps (∼1.6 eV) but face challenges with wide-bandgap perovskites, like methylammonium lead ...
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Work function engineering to enhance open-circuit voltage in …
Enhancement of open-circuit voltage (V oc) is an effective way to improve power conversion efficiency (PCE) of the perovskite solar cells (PSCs). Theoretically, work function engineering of TiO 2 electron transport layer can reduce both the loss of V oc and current hysteresis in PSCs.
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The high open-circuit voltage of perovskite solar cells: …
Perovskite solar cells (PSCs) have made incredibly fast progress in the past years, with the efficiency approaching 26%, which is comparable to those of the best silicon solar cells. One of the features of …
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Achieving high open circuit voltage for hole transport layer free ...
Electric double layer formed using the high ionic activity of hybrid the perovskites can improve the open circuit voltage in carbon electrode-based perovskite solar cell. The same electric double layer can be beneficial for futuristic integrated monolithic solar energy conversion and storage device using perovskites.
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The impact of interfacial quality and nanoscale performance
The impact of energy alignment and interfacial recombination on the internal and external open-circuit voltage of perovskite solar cells. Energy Environ. Sci. 12, 2778–2788 (2019).
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Improving the efficiency and stability of nickel oxide perovskite …
This review discusses the advances related to the use of nickel oxide (NiOx) in perovskite solar cells (PSCs) that are intended for commercialization. The authors analyze the deposition methods, the doping strategies, and the surface treatment of NiOx in respect to the performance and stability of the resulting PSCs. The challenges and perspectives are …
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A review: strategies for reducing the open-circuit voltage loss of …
Herein, we sort to comprehensively review about the reported studies on …
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Work function engineering to enhance open-circuit voltage in …
Enhancement of open-circuit voltage (V oc) is an effective way to improve …
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Enhancing the Open‐Circuit Voltage of Perovskite Solar …
It is demonstrated that the incorporation of π-PFEs introduces a dipole moment at the PCBM/Ag interface, resulting in significant enhancement of the built-in potential of the device. This enhancement results in an increase in …
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Enhancing the Open‐Circuit Voltage of Perovskite Solar Cells by …
It is demonstrated that the incorporation of π-PFEs introduces a dipole moment at the PCBM/Ag interface, resulting in significant enhancement of the built-in potential of the device. This enhancement results in an increase in the open-circuit voltage of the device by up to 120 mV, when compared to the commonly used bathocuproine HBL.
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The high open-circuit voltage of perovskite solar cells: a review
Perovskite solar cells (PSCs) have made incredibly fast progress in the past years, with the efficiency approaching 26%, which is comparable to those of the best silicon solar cells. One of the features of PSCs that make them stand out among all photovoltaics (PVs) is their high open-circuit voltage (VOC) al
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Open-Circuit-Voltage Improvement Mechanism of Perovskite Solar Cells ...
This report describes an investigation using electron spin resonance (ESR) to evaluate an improvement mechanism for the open-circuit voltage, V OC, of inverted perovskite solar cells at the initial stage of device operation. The ESR study revealed electron transfer at the interface from the perovskite layer to the hole-transport layer not only ...
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Enhancing the Open-Circuit Voltage of Perovskite Solar Cells by ...
In this work, we demonstrate how the incorporation of molecular dipoles into the bathocuproine (BCP) hole-blocking layer of inverted perovskite solar cells improves the device open-circuit voltage (V OC) and, consequently, their performance. We explore a series of four thiaazulenic derivatives that exhibit increasing dipole moments and ...
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How to increase the short circuit current density in a perovskite …
There are several articles have been reported for perovskite solar cells with different short circuit current density (Jsc). According to the EQE measurements, there should be a barrier for Jsc. I ...
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High open-circuit voltage in perovskite solar cells: The role of hole ...
Using the drift-diffusion model, a new expression for the open-circuit voltage …
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A review: strategies for reducing the open-circuit voltage loss of …
Herein, we sort to comprehensively review about the reported studies on reducing the VOC deficit of WPSCs, focusing on interface modification, charge transport material (CTM) exploration, and additive engineering, with the aim of providing guidelines for increasing the VOC of WPSCs.
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How Do Surface Polar Molecules Contribute to High Open‐Circuit …
To date, the improvement of open-circuit voltage (V OC) offers a breakthrough for the performance of perovskite solar cells (PSCs) toward their theoretical limit. Surface modification through organic ammonium halide salts (e.g., phenethylammonium ions PEA + and phenmethylammonium ions PMA + ) is one of the most straightforward strategies to ...
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Universal Current Losses in Perovskite Solar Cells Due to Mobile …
a) Current decay upon switching from open-circuit (OC) to short-circuit (SC) at t = 0 s, depicted for devices from several different perovskite compositions including MAPbI 3 ("MAPI") and two triple cation Cs 0.05 (FA x MA y) 0.95 Pb(I x Br y) 3 devices made from different (x/y) ratios of FAPbI 3 and MAPbBr 3 ("83/17" and "60/40") in a pin-structure, as well as one …
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How Do Surface Polar Molecules Contribute to High …
To date, the improvement of open-circuit voltage (V OC) offers a breakthrough for the performance of perovskite solar cells (PSCs) toward their theoretical limit. Surface modification through organic ammonium halide salts …
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High open-circuit voltage in perovskite solar cells: The role of …
Using the drift-diffusion model, a new expression for the open-circuit voltage (V o c) in perovskite solar cells is derived. The V o c increases with the ratio of the charge carrier mobilities (μ e / μ h) and by lowering the HOMO energy level of the hole transport layer (HTL).
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Photo-ferroelectric perovskite interfaces for boosting V OC in
Photovoltaic devices suffer from unavoidable open circuit voltage losses. Here, authors design a photo-ferroelectric 2D/3D/2D perovskite junction with 2D ferroelectric single crystals in bulk ...
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Open-Circuit-Voltage Improvement Mechanism of …
This report describes an investigation using electron spin resonance (ESR) to evaluate an improvement mechanism for the open-circuit voltage, V OC, of inverted perovskite solar cells at the initial stage of device …
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Design of a high-efficiency perovskite solar cell based on …
In Table 5, a comparison of short-circuit current, open-circuit voltage, fill factor, and efficiency of the proposed solar cell with recent research can be made. It is evident from Table 5 that the proposed solar cell''s efficiency with the presence of a PC in the active layer has increased by around 3% compared to the flat state, which is a significant improvement.
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Identifying the Cause of Voltage and Fill Factor Losses in Perovskite ...
The open-circuit voltage (V OC) and fill factor are key performance parameters of solar cells, and understanding the underlying mechanisms that limit these parameters in real devices is critical to their optimization vice modeling is combined with luminescence and cell current–voltage (I–V) measurements to show that carrier transport limitations within the cell …
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Current Density Mismatch in Perovskite Solar Cells
Perovskite films with perovskite seeding growth exhibit a lowered trap density, and the resulting planar solar cells achieve stabilized efficiency of 21.5% with a high open-circuit voltage of 1.13 V and a fill factor that exceeds 80%. The Cs-containing FAPbI3-based devices show a striking improvement in operational stability and retain 60% of their initial efficiency …
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