Monolithic Perovskite/Silicon Tandem Solar Cell with 28.7% Efficiency Using Industrial Silicon Bottom Cells

Sveinbjörnsson, Kári; Li, Bor; Mariotti, Silvia; Jarzembowski, Enrico; Kegelmann, Lukas; Wirtz, André; Frühauf, Felix; Weihrauch, Anika; Niemann, Ralf G.; Korte, Lars; Fertig, Fabian; Müller, Jörg; Albrecht, Steve

doi:10.1021/acsenergylett.2c01358

Cited by 45 publications

(24 citation statements)

References 13 publications

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“…Since silicon is the most common material on earth, it is appropriate to use solar cells based on it. A technology for the industrial production of a silicon/perovskite tandem solar cell with an efficiency of 28.7% has been developed [36]. Besides, heterojunction solar cells can overcome theoretical efficiency of solar cell [37].…”

Section: Introductionmentioning

confidence: 99%

Investigation of n-ZnO/p-Si and n-TiO₂/p-Si Heterojunction Solar Cells: TCAD + DFT

et al. 2023

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This paper focuses on exploring new materials and structure as a means to increase the efficiency of solar cells. Since silicon is widespread on earth, it is desirable to study heterojunction solar cells made mainly of silicon and new materials. Therefore, ZnO/Si and TiO2/Si heterojunction solar cells were studied in this paper. First, the electrical and optical properties of ZnO and TiO2 were determined using the Perdew-Burke-Ernzerhof (PBE), PBE functional revised for solids (PBESol) and Perdew-Wang (PW91) functionals of the Generalized gradient approximation (GGA) in Density Functional Theory (DFT). The obtained results in various functionals are assessed and analyzed. It was found that geometric optimized structures of TiO2 and ZnO is mechanical stable. Accordingly, in all functionals, the effective mass of the electron in ZnO and TiO2 proved to be smaller than that of the hole. The mobility of electrons and holes in ZnO was calculated to be 430.72 cm 2 V -1 s -1 and 5.25 cm 2 V -1 s -1 respectively. In TiO2, it was 355.27 cm 2 V -1 s -1 and 46.38 cm 2 V -1 s -1 . When PW91, PBESol, PBE functionals were used, the dielectric constant was determined to be 11, 11.5, 8.5 for ZnO and 9.5, 10, 9 for TiO2, respectively. According to the DFT results, it was determined that ZnO and TiO2 are transparent and mainly n-type direct semiconductors. According to device simulation, the maximum short-circuit current of ZnO/Si and TiO2/Si heterojunction solar cells is 18 mA/cm 2 at a thickness of 80 nm and 15.3 mA/cm 2 at a thickness of 40 nm. Finally, the average fill factor of ZnO/Si and TiO2/Si solar cells was 0.73 and 0.76 respectively. So TiO2 can be used as a transparent contact and ZnO as an emitter layer in a silicon-based solar cell.

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Section: Introductionmentioning

confidence: 99%

Investigation of n-ZnO/p-Si and n-TiO₂/p-Si Heterojunction Solar Cells: TCAD + DFT

et al. 2023

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“…[9][10][11][12] Within a short time, the power conversion efficiency (PCE) of 2-terminal (2T) Si/perovskite tandem solar cells has evolved from <20% to >30%, [10] even in large-area devices. [13] Recently, scientists from the HZB reported a 32.5% efficient 2-terminal (2T) Si/perovskite tandem solar cell, which is the highest PCE till date. [14] However, we note that the highefficiency number is in general a press release from the industry laboratory without many details in the public domain.…”

Section: Introductionmentioning

confidence: 99%

Stable and Efficient Large‐Area 4T Si/perovskite Tandem Photovoltaics with Sputtered Transparent Contact

et al. 2023

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Si-perovskite tandem photovoltaic devices in the four-terminal (4T) configuration could proffer a solution to the problems associated with the stability gap between the component perovskite and Si devices. The fabrication of NIR-transparent perovskite solar cells (PSCs) with the stable triple cation perovskite as the photoabsorber and subsequent integration with a Si solar cell in a 4T tandem device is reported. The critical development of the sputtered top transparent conducting electrode (TCE) layer and oxide buffer layer at room temperature (25 °C) leads to reproducible, highly efficient NIR-transparent PSCs of both small area (0.175 cm 2 ) with power conversion efficiency (PCE) of 17.1% and large area (0.805 cm 2 ) with PCE of 16.0%. Electrically disparate, optically coupled 4T tandem devices of the optimized PSCs with commercial monocrystalline PERC Si solar cells exhibit greater than 26% PCE. In addition to enabling industrycompatible TCE-based low-cost Si/perovskite tandem photovoltaics, this study could also be the gateway for the potential use in niche applications like building integrated photovoltaics.

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“…It is well documented in the literature that the cosensitization of two or more dyes enhanced the efficiency of DSSC devices, but it is a tedious process due to different quantities of dyes adsorbed on the TiO 2 nanostructure in a given soaking time of TiO 2 thin layers . An alternative approach is the tandem concept that is adopted particularly in perovskite–silicon solar cells where the device efficiency exceeded 28% …”

Section: Introductionmentioning

confidence: 99%

Unveiling a New Frontier in Efficient Solar Power Conversion with a Pioneering Bifacial Tandem Dye-Sensitized Solar Cell

Mounika,

Ambapuram,

Maddala

et al. 2023

ACS Appl. Electron. Mater.

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A bifacial tandem dye-sensitized solar cell (DSSC− DSSC) is developed, which exhibits a high solar power conversion efficiency (PCE) of 12.76% with a current density of 27.61 mA/cm 2 . The present work demonstrates the integration of an LG6 dye sensitizer for near-infrared light utilization and an N719 dye sensitizer for effective visible light capture in the bifacial tandem cell design. The developed bifacial tandem cell with LG6 and N719 dyes exhibited better incident photon-to-current conversion efficiency spectra. The stability was tested for up to 814 h, and a stable performance was detected. The developed mini-module exhibited a maximum point power density output of 1.41 mW/cm 2 . This work opens up a pioneering research approach for bifacial tandem solar cells with the DSSC.

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Monolithic Perovskite/Silicon Tandem Solar Cell with 28.7% Efficiency Using Industrial Silicon Bottom Cells

Abstract: We present a monolithic two-terminal perovskite/ silicon tandem solar cell based on an industrial silicon bottom cell fabricated with mass-production-feasible processes. The solar cell exhibited a steady-state power conversion efficiency of 28.7% and an open-circuit voltage of over 1.9 V.

Cited by 45 publications

References 13 publications

Investigation of n-ZnO/p-Si and n-TiO₂/p-Si Heterojunction Solar Cells: TCAD + DFT

Investigation of n-ZnO/p-Si and n-TiO₂/p-Si Heterojunction Solar Cells: TCAD + DFT

Stable and Efficient Large‐Area 4T Si/perovskite Tandem Photovoltaics with Sputtered Transparent Contact

Unveiling a New Frontier in Efficient Solar Power Conversion with a Pioneering Bifacial Tandem Dye-Sensitized Solar Cell

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Monolithic Perovskite/Silicon Tandem Solar Cell with 28.7% Efficiency Using Industrial Silicon Bottom Cells

Abstract: We present a monolithic two-terminal perovskite/ silicon tandem solar cell based on an industrial silicon bottom cell fabricated with mass-production-feasible processes. The solar cell exhibited a steady-state power conversion efficiency of 28.7% and an open-circuit voltage of over 1.9 V.

Cited by 45 publications

References 13 publications

Investigation of n-ZnO/p-Si and n-TiO2/p-Si Heterojunction Solar Cells: TCAD + DFT

Investigation of n-ZnO/p-Si and n-TiO2/p-Si Heterojunction Solar Cells: TCAD + DFT

Stable and Efficient Large‐Area 4T Si/perovskite Tandem Photovoltaics with Sputtered Transparent Contact

Unveiling a New Frontier in Efficient Solar Power Conversion with a Pioneering Bifacial Tandem Dye-Sensitized Solar Cell

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Investigation of n-ZnO/p-Si and n-TiO₂/p-Si Heterojunction Solar Cells: TCAD + DFT

Investigation of n-ZnO/p-Si and n-TiO₂/p-Si Heterojunction Solar Cells: TCAD + DFT