Towards 28 %-efficient Si single-junction solar cells with better passivating POLO junctions and photonic crystals

Peibst, Robby; Rienäcker, Michael; Larionova, Yevgeniya; Folchert, Nils; Haase, Felix; Hollemann, Christina; Wolter, Sascha J.; Krügener, Jan; Bayerl, P.; Bayer, Johannes C.; Dzinnik, Marvin; Haug, R. J.; Brendel, Rolf

doi:10.1016/j.solmat.2021.111560

Cited by 15 publications

(14 citation statements)

References 46 publications

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“…To achieve high conversion efficiency in crystalline silicon (c-Si) solar cells, the carrier selective contacts are of considerable importance in suppressing the recombination current (J 0 ) of the minority carriers and gaining a high open-circuit voltage (V OC ) [1][2][3][4][5][6][7][8] . Among a wide range of approaches, the tunnel oxide passivated contacts (TOP-Con) are promising candidates because of their low recombination loss and high carrier selectivity with a high conversion efficiency of 25.7% 5 .…”

Section: Thermal Annealing Effects On Tunnel Oxide Passivated Hole Co...mentioning

confidence: 99%

“…Among a wide range of approaches, the tunnel oxide passivated contacts (TOP-Con) are promising candidates because of their low recombination loss and high carrier selectivity with a high conversion efficiency of 25.7% 5 . The TOPCon structure, which introduces a buffer layer of tunnel oxide between heavily-doped polysilicon (poly-Si) and the base wafer, exhibits high-quality passivation owing to an indirect metal contact with the c-Si wafer, one-dimensional current flow, and tunneling-based carrier selectivity [2][3][4][5][6][7][8] .…”

Section: Thermal Annealing Effects On Tunnel Oxide Passivated Hole Co...mentioning

confidence: 99%

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Thermal annealing effects on tunnel oxide passivated hole contacts for high-efficiency crystalline silicon solar cells

Kweon

Min

Lee

et al. 2022

Sci Rep

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Tunnel oxide passivated contacts (TOPCon) embedding a thin oxide layer between polysilicon and base crystalline silicon have shown great potential in the development of solar cells with high conversion efficiency. In this study, we investigate the formation mechanism of hole-carrier selective contacts with TOPCon structure on n-type crystalline silicon wafers. We explore the thermal annealing effects on the passivation properties in terms of the stability of the thermally-formed silicon oxide layer and the deposition conditions of boron-doped polysilicon. To understand the underlying principle of the passivation properties, the active dopant in-diffusion profiles following the thermal annealing are investigated, combined with an analysis of the microscopic structure. Based on PC1D simulation, we find that shallow in-diffusion of boron across a robust tunnel oxide forms a p–n junction and improves the passivation properties. Our findings can provide a pathway to understanding and designing high-quality hole-selective contacts based on the TOPCon structure for the development of highly efficient crystalline silicon solar cells.

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Section: Thermal Annealing Effects On Tunnel Oxide Passivated Hole Co...mentioning

confidence: 99%

Section: Thermal Annealing Effects On Tunnel Oxide Passivated Hole Co...mentioning

confidence: 99%

Thermal annealing effects on tunnel oxide passivated hole contacts for high-efficiency crystalline silicon solar cells

Kweon

Min

Lee

et al. 2022

Sci Rep

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“…Apart from PV electric power generation, [12,67] electric power could also be produced through the photo-thermoelectric effect in which solar energy is utilized by combining light absorber and thermoelectric modules. Generally, a photo-thermoelectric conversion process includes that: 1) the light absorber absorbs the solar light and converts it into heat, resulting in a high temperature surface on the light absorber; 2) the back side of thermoelectric modules is against the solar light and it will achieve a low surface temperature; 3) the temperature difference (ΔT) between the high temperature and low temperature will form a driving force and the force will drive thermoelectric modules to generate electricity.…”

Section: Photothermal Electric Power Generationmentioning

confidence: 99%

“…[ 7,8 ] Therefore, it is the most promising alternative to fossil energy compared to nuclear energy, [ 9 ] wind energy, [ 10 ] and blue energy. [ 11 ] Among the solar energy conversion technologies, [ 12 ] silicon‐based photovoltaic (PV) solar cell has been commercialized and the efficiency of monolithic silicon/perovskite solar cell has achieved over 29%. [ 13,14 ] Alternatively, photothermal conversion is another way to utilize solar energy and has drawn dramatically increasing attention due to the easily achievable large conversion efficiency (usually larger than 50%) for the applications in thermal catalysis, [ 15–18 ] water evaporation and desalination, [ 19–27 ] bacterial killing, [ 28 ] as well as thermal‐responsive sensors.…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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A Review on Photothermal Conversion of Solar Energy with Nanomaterials and Nanostructures: From Fundamentals to Applications

Cheng

Wang

Schaaf

2022

Advanced Sustainable Systems

135

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of monolithic silicon/perovskite solar cell has achieved over 29%. [13,14] Alternatively, photothermal conversion is another way to utilize solar energy and has drawn dramatically increasing attention due to the easily achievable large conversion efficiency (usually larger than 50%) for the applications in thermal catalysis, [15][16][17][18] water evaporation and desalination, [19][20][21][22][23][24][25][26][27] bacterial killing, [28] as well as thermal-responsive sensors. [29][30][31] Photothermal conversion of solar energy refer that solar energy is first converted into heat and then heat energy is utilized to achieve the desired destinations, [15,16,28,[31][32][33][34] such as water purification, desalination, electric power generation, catalysis conversion, bacterial killing, and actuators. Thus, photothermal conversions of solar energy can be supplementary to PV-based technology in solar energy conversion and are deemed to be extremely important to clean energy production. [19,35,36] Very recently, photothermal-derived applications have attracted many researchers' interests and great efforts have been taken to expand the application fields and increase the conversion efficiency based on solar energy conversion. [29,[37][38][39][40][41][42][43][44] Among all the applications, photothermal water evaporation for desalination and water purification has attracted the most attention, owning that freshwater can be directly produced by only using solar energy and it can address the freshwater shortage challenge for many countries. [27,32,33,[45][46][47][48][49][50][51][52][53] However, the research focusing on other applications has attracted less attention than photothermal water evaporation, which should also be taken equally important attention for making the most of solar energy. For example, photothermal catalysis for H 2 generation and CO 2 reduction can be applied to convert solar energy into chemical energy under high concentrated solar intensity, but the efforts are still far from enough. Although photothermal electric power generation can show a solar-to-electricity conversion efficiency exceeding 7% under 38 Sun, [54] its conversion efficiency remains very low under low concentration solar intensity, such as 1 Sun or ambient conditions. Thus, the tradeoff between efficiency, costs, and practicality should be considered in future works. In addition, photothermal bacterial killing technology has proved that it can be efficiently used for killing bacteria under solar light illumination, [28] but whether it can be applied for human or animal wound treatment still needs to be discussed. Furthermore, solar energy can also cause thermally sensitive objects to reversibly change the physical properties for Solar energy is a green, sustainable, and de facto inexhaustible energy source for mankind. The conversion of solar energy into other forms of energy has attracted extensive research interest due to climate change and the energy crisis. Among all the solar energy conversion technologies, photothermal conversio...

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Tuning Spatially Resolved Shape Memory Effects of Stimuli‐Responsive Macroporous Photonic Crystals

Leverant,

Zhang,

Gao

et al. 2024

Adv Eng Mater

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Stimuli‐responsive photonic crystals with patterned microstructures are of great interest in developing reconfigurable nanooptical devices. Leveraging unconventional all‐room‐temperature shape memory efforts and spatially resolved photopolymerization, here we report a facile method for micropatterning stimuli‐responsive photonic crystals. Macroporous shape memory polymer (SMP) photonic crystals fabricated by colloidal templating can be deformed by cold programming, triggering the disappearance of their original structural colors. Exposure of the deformed samples to UV light through a photomask selectively disables the shape memory capabilities in the UV‐exposed regions. Hidden micropatterns defined by the photomask can be revealed by exposing the colorless SMP films to ethanol vapor, which triggers the shape memory recovery of the “memorized” ordered microstructures and the corresponding structural colors. Extensive nanoindentation experiments indicate that the exposure to UV light increases the crosslinking density and enhances the elastic modulus and toughness of the exposed regions by a factor of ∽2.0 and ∽5.2, respectively. Due to the formation of these extra crosslinks in the deformed configuration, they prevent normal shape memory behavior where the strained polymer chains rearrange from the temporary to permanent configuration when triggered by an external stimulus. This simple micropatterning technology can enable multi‐stimuli‐responsive reconfigurable nanophotonic devices and chromogenic anticounterfeiting labels.This article is protected by copyright. All rights reserved.

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Towards 28 %-efficient Si single-junction solar cells with better passivating POLO junctions and photonic crystals

Cited by 15 publications

References 46 publications

Thermal annealing effects on tunnel oxide passivated hole contacts for high-efficiency crystalline silicon solar cells

Thermal annealing effects on tunnel oxide passivated hole contacts for high-efficiency crystalline silicon solar cells

A Review on Photothermal Conversion of Solar Energy with Nanomaterials and Nanostructures: From Fundamentals to Applications

Tuning Spatially Resolved Shape Memory Effects of Stimuli‐Responsive Macroporous Photonic Crystals

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