All-perovskite tandem solar cells: from fundamentals to technological progress

Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(13), P. 4390 - 4425

Published: Jan. 1, 2024

This review provides fundamental knowledge and development directions towards the commercialising of advantageous all-perovskite tandem solar cells.

Language: Английский

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Exploring Trends and Opportunities in Quantum‐Enhanced Advanced Photonic Illumination Technologies

Advanced Quantum Technologies, Journal Year: 2024, Volume and Issue: 7(3)

Published: Jan. 18, 2024

Abstract The development of quantum‐enabled photonic technologies has opened new avenues for advanced illumination across diverse fields, including sensing, computing, materials, and integration. This review highlights how Quantum‐enhanced sensing imaging exploit nonclassical correlations to attain unprecedented accuracy in chaotic environments. As well as guaranteeing secure communications, quantum cryptography, protected by physical principles, ensures unbreakable cryptographic key exchange. computing speed increases exponentially, previously unimplementable uses classical computers become feasible. On‐chip integration enables the mass production components pervasive applications facilitating miniaturization scalability. A powerful flexible platform is produced when systems are combined. Quantum spin liquids other topological materials can maintain their states while subject decoherence. Despite challenges with decoherence, production, commercialization, photonics an exciting area study that promises lighting techniques impossible conventional optics. To realize this promise, researchers from several fields must work together solve complex technical problems decode fundamental physics. Finally, advances have potential evolve devices cutting‐edge methods usher a age options based on dots.

Language: Английский

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Titanium:sapphire-on-insulator integrated lasers and amplifiers

Nature, Journal Year: 2024, Volume and Issue: 630(8018), P. 853 - 859

Published: June 26, 2024

Language: Английский

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From past to future: on-chip laser sources for photonic integrated circuits

Light Science & Applications, Journal Year: 2023, Volume and Issue: 12(1)

Published: Jan. 15, 2023

The realisation of on-chip light sources paves the way towards full integration Si-based photonic integrated circuits (PICs).

Language: Английский

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Generating free-space structured light with programmable integrated photonics

Nature Photonics, Journal Year: 2024, Volume and Issue: 18(3), P. 243 - 249

Published: Jan. 12, 2024

Language: Английский

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Multi-junction cascaded vertical-cavity surface-emitting laser with a high power conversion efficiency of 74%

Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)

Published: Feb. 28, 2024

Abstract High electro-optical conversion efficiency is one of the most distinctive features semiconductor lasers as compared to other types lasers. Its further increase remains a significant objective. Further enhancing edge-emitting (EEL), which represent highest among at present, challenging. The vertical cavity surface emitting (VCSELs) has always been relatively low EEL. This paper, combining modeling with experiments, demonstrates potential multi-junction cascaded VCSELs achieve high beyond that EELs, our simulations show, 20-junction VCSEL can an more than 88% room temperature. We fabricated devices different numbers junctions and their energy efficiency. 15-junction achieved maximum 74% temperature under nanosecond driving current, corresponding differential quantum exceeds 1100%, being largest reported until now for VCSELs.

Language: Английский

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Turnkey locking of quantum-dot lasers directly grown on Si

Nature Photonics, Journal Year: 2024, Volume and Issue: 18(7), P. 669 - 676

Published: April 26, 2024

Abstract Ultralow-noise laser sources are crucial for a variety of applications, including microwave synthesizers, optical gyroscopes and the manipulation quantum systems. Silicon photonics has emerged as promising solution high-coherence applications due to its ability reduce system size, weight, power consumption cost. Semiconductor lasers based on self-injection locking have achieved fibre coherence, but typically require high-quality-factor external cavity suppress coherence collapse through frequency-selective feedback. Lasers external-cavity low-cost turnkey operation option, their is generally inferior lasers. In this work, we demonstrate quantum-dot grown directly Si that achieve self-injection-locking under locking. The high-performance offers scalable heteroepitaxial integration platform. Moreover, chaos-free nature enables 16 Hz Lorentzian linewidth using low-quality-factor cavity, improves frequency noise by an additional order magnitude compared with conventional quantum-well

Language: Английский

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Color coded metadevices toward programmed terahertz switching

Light Science & Applications, Journal Year: 2024, Volume and Issue: 13(1)

Published: June 25, 2024

Abstract Terahertz modulators play a critical role in high-speed wireless communication, non-destructive imaging, and so on, which have attracted large amount of research interest. Nevertheless, all-optical terahertz modulation, an ultrafast dynamical control approach, remains to be limited terms encoding multifunction. Here we experimentally demonstrated optical-programmed switching realized by combining optical metasurfaces with the metasurface, resulting 2-bit dual-channel encoding. The made up semiconductor islands artificial microstructures, enables effective programming providing multiple frequency channels modulation at nanosecond level. Meanwhile, covered metasurface alter spatial light field distribution obtain color code. According time-domain coupled mode theory analysis, energy dissipation modes can independently controlled excitation, explains principle well. This work establishes platform for programmed metadevices may further advance application composite manipulation.

Language: Английский

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Silicon Nitride Integrated Photonics from Visible to Mid‐Infrared Spectra

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: July 27, 2024

Abstract Silicon nitride (Si 3 N 4 ) photonic integrated circuits (PICs) are of great interest due to their extremely low propagation loss and higher integration capabilities. The number applications based on the silicon photonics platform continues grow, including Internet Things (IoT), artificial intelligence (AI), light detection ranging (LiDAR), hybrid neuromorphic quantum computing. It's potential for CMOS compatibility, as well advances in heterogeneous with silicon‐on‐insulator, indium phosphate, lithium niobate insulator platforms, leading an advanced large‐scale PICs. Here, they review key trends Si circuit technology fill information gap field state‐of‐the‐art devices operating from visible mid‐infrared spectrum. A comprehensive overview its microfabrication process details (deposition, lithography, etching, etc.) is introduced. Finally, limitations challenges performance pointed out ultra‐wideband, providing routes prospects future scaling optimization.

Language: Английский

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Emerging integrated laser technologies in the visible and short near-infrared regimes

Nature Photonics, Journal Year: 2024, Volume and Issue: 18(10), P. 1010 - 1023

Published: Sept. 27, 2024

Language: Английский

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