Heterogeneity of Light-Induced Open-Circuit Voltage Loss in Perovskite/Si Tandem Solar Cells

Tao, Zhi-Wei; Lu, Teng; Gao, Xiang; Rothmann, Mathias Uller; Jiang, Yang; Qiang, Zi-Yue; Du, Hong-Qiang; Guo, Chang; Yang, Long-Hui; Wang, Cai-Xia; Liu, Yun; Cheng, Yi-Bing; Li, Wei

doi:10.1021/acsenergylett.4c00110

Cited by 5 publications

(2 citation statements)

References 65 publications

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“…Rs impedes current flow through the cell resulting from resistance encountered as current traverses different layers and interfaces within the device. High Rs causes substantial voltage drop across the cell, diminishing overall efficiency and reducing the FF, a metric indicating how effectively the cell converts photons into electrical energy [80]. Conversely, Rsh characterises unintended electrical pathways across the solar cell.…”

Section: Impact Of Shunt Resistancesmentioning

confidence: 99%

Numerical simulation of a novel high performance solid‐state dye‐sensitised solar cell based on N719 dye

Njema,

Kibet,

Rono

et al. 2024

IET Optoelectronics

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Among the emerging photovoltaic technologies, solid‐state dye‐sensitised solar cells (ssDSSCs) have attracted considerable interest due to their cost‐effective production, adjustable characteristics, and potential for lightweight and flexible applications. Nevertheless, achieving efficiencies comparable to established technologies, such as perovskite and silicon‐based solar devices, have proven challenging. Herein, the device structure, Pt/PEDOT: PSS/N719 dye/PC61BM/ITO is investigated theoretically using the solar cell capacitance simulator (SCAPS‐1D). Groundbreaking advancement is introduced in ssDSSC design, achieving remarkable theoretical power conversion efficiency of 20.73%, surpassing the performance reported in traditional dye‐based solar cell technologies. The model ssDSSC demonstrates an exceptional Fill factor of 86.64%, indicating efficient current collection; along with a modest short‐circuit current density (Jsc) of 22.38 mA/cm2 and an impressive open‐circuit voltage (Voc) of 1.0691 V, highlighting efficient light absorption and charge separation. Mott–Schottky capacitance analysis and parasitic resistances (series and shunt) have been thoroughly discussed. Despite the fact that only numerical simulation is involved, the proposed ssDSSCs structure gives insights into the fabrication of a highly efficient solar cell that can be injected into the production workflow in order to advance the photovoltaic technology of the solid‐state DSSC.

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Section: Impact Of Shunt Resistancesmentioning

confidence: 99%

Numerical simulation of a novel high performance solid‐state dye‐sensitised solar cell based on N719 dye

Njema,

Kibet,

Rono

et al. 2024

IET Optoelectronics

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show abstract

“…Very recently, Wei Li et al unveiled the impact of phase segregation in Cs 0.17 FA 0.83 Pb(I 0.80 Br 0.20 ) 3 films with a bandgap of 1.67 eV through a photoconductive atomic force microscopy. By testing the I-V curves at both grain boundaries and grain interiors with nanoscopic resolution, they identified that iodide-rich phases primarily segregated at defect-enriched grain boundaries under continuous illumination, causing a more significant local open-circuit voltage (V OC ) decrease than that occurring at grain interiors [38].…”

Section: Introductionmentioning

confidence: 99%

[BMP]+[BF4]−-Modified CsPbI1.2Br1.8 Solar Cells with Improved Efficiency and Suppressed Photoinduced Phase Segregation

Xie,

Li,

Zhang

et al. 2024

Molecules

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With the rapid progress in a power conversion efficiency reaching up to 26.1%, which is among the highest efficiency for single-junction solar cells, organic–inorganic hybrid perovskite solar cells have become a research focus in photovoltaic technology all over the world, while the instability of these perovskite solar cells, due to the decomposition of its unstable organic components, has restricted the development of all-inorganic perovskite solar cells. In recent years, Br-mixed halogen all-inorganic perovskites (CsPbI3−xBrx) have aroused great interests due to their ability to balance the band gap and phase stability of pure CsPbX3. However, the photoinduced phase segregation in lead mixed halide perovskites is still a big burden on their practical industrial production and commercialization. Here, we demonstrate inhibited photoinduced phase segregation all-inorganic CsPbI1.2Br1.8 films and their corresponding perovskite solar cells by incorporating a 1-butyl-1-methylpiperidinium tetrafluoroborate ([BMP]+[BF4]−) compound into the CsPbI1.2Br1.8 films. Then, its effect on the perovskite films and the corresponding hole transport layer-free CsPbI1.2Br1.8 solar cells with carbon electrodes under light is investigated. With a prolonged time added to the reduced phase segregation terminal, this additive shows an inhibitory effect on the photoinduced phase segregation phenomenon for perovskite films and devices with enhanced cell efficiency. Our study reveals an efficient and simple route that suppresses photoinduced phase segregation in cesium lead mixed halide perovskite solar cells with enhanced efficiency.

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Linking Nanoscopic Insights to Millimetric‐Devices in Formamidinium‐Rich Perovskite Photovoltaics

Othman,

Jeangros,

Rothmann

et al. 2024

Advanced Materials

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Halide‐perovskite semiconductors have a high potential for use in single‐junction and tandem solar cells. Despite their unprecedented rise in power conversion efficiencies (PCEs) for photovoltaic (PV) applications, it remains unclear whether perovskite solar modules can reach a sufficient operational lifetime. In order to make perovskite solar cells (PSCs) commercially viable, a fundamental understanding of the relationship between their nanostructure, optoelectronic properties, device efficiency, and long‐term operational stability/reliability needs to be established. In this review, the phase instabilities in state‐of‐the‐art formamidinium (FA)‐rich perovskite absorbers is discussed. Furhermore, the concerted efforts are summarized in this prospect, covering aspects from fundamental research to device engineering. Subsequently, a critical analysis of the dictating impact of the nanoscale landscape of perovskite materials on their resulting intrinsic stability is provided ’. Finally, the remaining challenges in the field are assessed and future research directions are proposed for improving the operational lifetimes of perovskite devices. It is believed that these approaches, which bridge nanoscale structural properties to working solar cell devices, will be critical to assessing the realization of a bankable PSC product.

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Heterogeneity of Light-Induced Open-Circuit Voltage Loss in Perovskite/Si Tandem Solar Cells

Cited by 5 publications

References 65 publications

Numerical simulation of a novel high performance solid‐state dye‐sensitised solar cell based on N719 dye

Numerical simulation of a novel high performance solid‐state dye‐sensitised solar cell based on N719 dye

[BMP]+[BF4]−-Modified CsPbI1.2Br1.8 Solar Cells with Improved Efficiency and Suppressed Photoinduced Phase Segregation

Linking Nanoscopic Insights to Millimetric‐Devices in Formamidinium‐Rich Perovskite Photovoltaics

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