Selective laser patterning in organic solar cells

Fernandes, Susana Abreu; Maragkaki, Stella; Ostendorf, Andreas

doi:10.1117/12.2061248

Cited by 4 publications

(3 citation statements)

References 12 publications

(15 reference statements)

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“…Using short-wavelength lasers has been shown to lead the scribing mechanism to chemical bond breaking and photochemical decomposition of molecules caused by the high photon energy [36]. It has been reported that in ITO and ZnO femtosecond UV (ultraviolet) laser scribing of the P1 layer with lower fluences, photochemical ablation is dominant; however, increasing pulse fluence can push the scribing process to thermal ablation [37].…”

Section: Thin Film Laser Scribing Mechanismsmentioning

confidence: 99%

“…In laser scribing, when the pulse duration exceeds the electron-phonon relaxation time, then the heat starts diffusing into the surrounding material, followed by transferring of electrons' energy to the lattice and thermalization between the electrons and the lattice. In this case, since heat conduction in thin films is smaller than in thick layers, it leads to weak heat dissipation, accelerating evaporation in thin film ablation rather than melting [37,49]. Therefore, decreasing the layer thickness is accompanied by increasing the surface temperature [50].…”

Section: Thin Film Laser Scribing Mechanismsmentioning

confidence: 99%

See 1 more Smart Citation

Laser Scribing of Photovoltaic Solar Thin Films: A Review

Jamaatisomarin,

Chen,

Hosseini-Zavareh

et al. 2023

JMMP

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The development of thin-film photovoltaics has emerged as a promising solution to the global energy crisis within the field of solar cell technology. However, transitioning from laboratory scale to large-area solar cells requires precise and high-quality scribes to achieve the required voltage and reduce ohmic losses. Laser scribing has shown great potential in preserving efficiency by minimizing the drop in geometrical fill factor, resistive losses, and shunt formation. However, due to the laser induced photothermal effects, various defects can initiate and impact the quality of scribed grooves and weaken the module’s efficiency. In this regard, much research has been conducted to analyze the geometrical fill factor, surface integrity, and electrical performance of the laser scribes to reach higher power conversion efficiencies. This comprehensive review of laser scribing of photovoltaic solar thin films pivots on scribe quality and analyzes the critical factors and challenges affecting the efficiency and reliability of the scribing process. This review also covers the latest developments in using laser systems, parameters, and techniques for patterning various types of solar thin films to identify the optimized laser ablation condition. Furthermore, potential research directions for future investigations at improving the quality and performance of thin film laser scribing are suggested.

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Section: Thin Film Laser Scribing Mechanismsmentioning

confidence: 99%

Section: Thin Film Laser Scribing Mechanismsmentioning

confidence: 99%

Laser Scribing of Photovoltaic Solar Thin Films: A Review

Jamaatisomarin,

Chen,

Hosseini-Zavareh

et al. 2023

JMMP

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show abstract

“…For the production of ”green” and flexible graphene‐based electronics, the utilization of toxic chemicals and high‐temperature should be avoided. Laser processing offers this great advantage, enabling mask‐free patterning, [ 7,83,84 ] hierarchical structuring, [ 61,85 ] and flexible wiring, which substantially simplifies the fabrication and integration of flexible electronics. [ 58 ] In addition, laser patterning and hierarchical structuring may contribute to the improvement of device performance.…”

Section: Photovoltaic Devicesmentioning

confidence: 99%

Advanced Photonic Processes for Photovoltaic, Energy Storage, and Environmental Systems

Maragkaki

Savva

Stratakis

2021

Advanced Sustainable Systems

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On account of the increasing energy demand, there is a need for worldwide exploration for new materials and methods in developing other energy sources and storage technologies. With the development of portable electronics, integrated graphene‐based systems have attracted increasing attention due to their environmental friendliness, mechanical flexibility, and lightweight features. In this review, the latest advances in laser‐directed design and fabrication of integrated graphene‐based devices, along with state‐of‐the‐art applications in energy storage and solar cell technologies are comprehensively summarized. Recent advances in this field give promising and clean solutions offering an answer to the increasing concern of global warming and the growing energy demand in developed nations. The perspectives and challenges in designing and improving future graphene integrated devices are also discussed.

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Micro-pixelated halide perovskite photodiodes fabricated with ultraviolet laser scribing

Morozov,

Gostishchev,

Zharkova

et al. 2024

Applied Physics Letters

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In this study, we present a complex investigation for miniaturizing perovskite photodiodes (PPDs) in various geometries with the use of ultraviolet laser scribing (UV-LS). Employing a 355 nm (3.5 eV) pulsed laser at 30 kHz, we manufactured PPDs with pixel configurations of 70 × 130, 520 × 580, and 2000 × 2000 μm2. The utilization of UV-LS has a proven efficiency in achieving relevant diode characteristics, such as low dark currents and high shunt resistance, as well as ultrafast response. The multi-step scribing cycle provided precise patterning of PPDs in a string design. The dark current densities demonstrated exceptional uniformity, ranging from 10−10 A/cm2 for 2000 × 2000 μm2 pixelated PPDs to 10−9 A/cm2 for the 70 × 130 μm2 configuration. The string PPDs, consisting of 10 pixels per string, displayed homogenous dark current values, ensuring effective isolation between devices. Under green light illumination (540 nm), all PPD types exhibited a broad linear dynamic range (LDR). Specifically, LDR values reached 110, 117, and 136 dB for 70 × 130, 520 × 580, and 2000 × 2000 devices, respectively, spanning an illumination intensity range from 2 × 10−3 to 2 mW/cm2. High responsivity values up to 0.38 A/W, depending on the PPDs' geometry, highlight the potential of laser scribing devices for sensing in the visible range. The calculated specific detectivity performance (from 1011 to 1013 Jones) surpasses commercial analogs, while the sub-microsecond response of 70 × 130 and 520 × 580 μm2 miniaturized devices underscores their suitability for precise time resolution detection systems.

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Selective laser patterning in organic solar cells

Cited by 4 publications

References 12 publications

Laser Scribing of Photovoltaic Solar Thin Films: A Review

Laser Scribing of Photovoltaic Solar Thin Films: A Review

Advanced Photonic Processes for Photovoltaic, Energy Storage, and Environmental Systems

Micro-pixelated halide perovskite photodiodes fabricated with ultraviolet laser scribing

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