Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: unknown, P. 178207 - 178207
Published: Dec. 1, 2024
Language: Английский
Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 11, 2025
Abstract As a special type of photodetectors, the bipolar photodetectors (BPDs) have attracted extensive attention because their unique positive and negative outputs, endowing them attractive applications, such as optical communication, logic gate, imaging. However, there is still insufficient understanding working mechanisms device structures BPDs, which limits optoelectronic performances practical applications. This review focuses on principles, constructions, applications BPDs. First, fundamental principles BPDs are analyzed based structures, including photoconductors, photodiodes, phototransistors, photoelectrochemical others. Second, constructions different materials (2D materials, organic semiconductors, perovskites, III–V compounds, oxides, selenides) reviewed, discussed. Third, various summarized, Finally, challenges prospects delivered for developing state‐of‐the‐art It can be expected that this will provide valuable insights guidance future research
Language: Английский
Citations
2
Light Science & Applications, Journal Year: 2025, Volume and Issue: 14(1)
Published: Jan. 24, 2025
Language: Английский
Citations
1
Surfaces and Interfaces, Journal Year: 2024, Volume and Issue: 52, P. 104996 - 104996
Published: Aug. 23, 2024
Language: Английский
Citations
5
Advanced Optical Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 3, 2024
Abstract High‐resolution infrared (IR) imaging technology holds substantial significance across diverse fields including biomedical imaging, environmental surveillance, and IR digital cameras. Current detectors used in commercial applications are based on ultra‐high vacuum‐processed traditional inorganic semiconductors like silicon or III‐V compounds (e.g., Si, Ge, InGaAs). However, the rapid advancements such as autonomous vehicles, virtual reality, point‐of‐care healthcare driving an escalating need for innovative technologies. This review aims to bridge gap by exploring solution‐processed semiconductor photodetectors (PDs), which offer distinct advantages cost‐effectiveness, tunable spectral response, potential multiple‐exciton generation. These characteristics make them particularly suitable optical communication, biological monitoring applications. provides comprehensive insights into research trends pertaining imagers colloidal quantum dots, perovskites, organic compounds, 2D materials. The commences with current market worth of image sensors, fundamental principles single‐pixel multipixel array imagers, key parameters assess detector performance. In essence, concludes a summary recent future prospects next‐generation PD devices their application imager.
Language: Английский
Citations
4
Science Advances, Journal Year: 2025, Volume and Issue: 11(2)
Published: Jan. 8, 2025
Owing to the predominant merit of tunable bandgaps, tin-lead mixed perovskites have shown great potentials in realizing near-infrared optoelectronics and are receiving increasing attention. However, despite merit, there is still a lack fundamental understanding bandgap variation as function Sn/Pb ratio, mainly because films easy segregate terms both composition phase. Here, we report fully stoichiometric synthesis monocrystalline FAPb 1− x Sn I 3 nanocrystals well their atomic-scale imaging. On basis systematic measurements materials, strain Coulomb interaction–induced atomic ordering was revealed be responsible for unusual discontinuous jumping near = 0.5 from expected bowing effect. As result, 0.6 0.4 lowest bandgaps around 1.27 electron volts, while that 1.33 volts. Correspondingly, based light-emitting diodes can emit infrared lights with wavelengths reaching 930 nanometers.
Language: Английский
Citations
0
Materials Today Energy, Journal Year: 2025, Volume and Issue: unknown, P. 101814 - 101814
Published: Jan. 1, 2025
Language: Английский
Citations
0
Physica B Condensed Matter, Journal Year: 2025, Volume and Issue: unknown, P. 417229 - 417229
Published: April 1, 2025
Language: Английский
Citations
0
Small, Journal Year: 2024, Volume and Issue: 20(48)
Published: Sept. 20, 2024
Abstract The advent of organic–inorganic hybrid metal halide perovskites has revolutionized photovoltaics, with polycrystalline thin films reaching over 26% efficiency and single‐crystal perovskite solar cells (IC‐PSCs) demonstrating ≈24%. However, research on remains limited, leaving a crucial gap in optimizing energy conversion. Unlike films, which suffer from high defect densities instability, offer minimal defects, extended carrier lifetimes, longer diffusion lengths, making them ideal for high‐performance optoelectronics essential understanding material behavior. This review explores the advancements potential IC‐PSCs, focusing their superior efficiency, stability, role overcoming limitations counterparts. It covers device architecture, composition, preparation methodologies, recent breakthroughs, emphasizing importance further to propel IC‐PSCs toward commercial viability future dominance photovoltaic technology.
Language: Английский
Citations
3
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: March 16, 2025
Abstract Tin‐lead binary perovskites, with their low bandgap and high absorption coefficient, hold great potential for application in near‐infrared (NIR) photodetectors. However, uncontrolled crystallization a defect density at the interface, particularly buried significantly hinder performance enhancement. To address this challenge, work incorporated quaternary ammonium salt tetrabutylammonium iodide (TBAI) into precursor solution. TBAPbI 3 formation energy accumulates rapidly bottom templates growth of 3D perovskite films, effectively reduces bulk density. Furthermore, also passivates FA + vacancy defect. These synergistic treatments passivate both surface defects varying nature, thereby limiting ingress oxygen film reducing oxidation Sn 2+ . The resulting photodetectors exhibited outstanding performance, including responsivity (0.53 A W −1 860 nm), an excellent detectivity (4.6 × 10 12 Jones), ultrafast response speed (93.2 ns), as well enhanced environmental stability. Leveraging its exceptional photoelectric flexible NIR photodetector is integrated wearable reflective oximetry detection system, achieving accurate non‐invasive assessment heart rate blood saturation. results highlight promising tin‐lead perovskites health monitoring applications.
Language: Английский
Citations
0
physica status solidi (b), Journal Year: 2025, Volume and Issue: unknown
Published: April 5, 2025
Lead‐free double perovskites (DPs), such as Cs 2 AgBiI 6 , have garnered significant attention sustainable alternatives to lead‐based for optoelectronic applications. However, challenges in defect management, interface engineering, and device optimization limited their performance. Herein, a comprehensive design of ‐based vertical photodetector using combination first‐principles density functional theory (DFT) SCAPS‐1D simulations are presented. The DFT calculations reveal an indirect bandgap 1.53 eV, ideal visible‐light absorption charge transport. Systematic the architecture, including transport layers, thickness, doping concentrations, densities, leads optimal structure FTO/ReS /Cs /CdTe/Au. optimized achieves responsivity 0.552 A W −1 detectivity 1.542 × 10 12 Jones at 700 nm illumination. Remarkably, demonstrates excellent low‐power light detection capabilities, with values 0.72 2.01 Jones, respectively, incident power 0.03 m −2 . These findings highlight potential DPs sustainable, high‐performance photodetectors provide roadmap experimental realization broader
Language: Английский
Citations
0