Spontaneous emission in micro- or nanophotonic structures

Qian, Zhiyuan; Shan, Li; Zhang, Xinchen; Liu, Qi; Ma, Yun; Gong, Qihuang; Gu, Ying

doi:10.1186/s43074-021-00043-z

Cited by 35 publications

(19 citation statements)

References 360 publications

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“…For example, Fang's group [22] achieved a novel self-powered photodetector based on a p-CuZnS/n-TiO 2 nanotube array heterojunction using two-step anodic oxidation. However, unlike inorganic semiconductors, van der Waals forces cause difficulty in achieving large-area single crystals of organic molecules [23][24][25][26]. In addition, most organic materials are susceptible to decomposition when exposed to organic solvents, high temperatures, or strong ultraviolet light, which are commonly used in inorganic semiconductor patterning methods [27][28][29].…”

Section: Introductionmentioning

confidence: 99%

Highly aligned organic microwire crystal arrays for high-performance polarization-sensitive photodetectors and image sensors

Sun

et al. 2022

Sci. China Mater.

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Organic semiconductors with excellent optoelectronic properties are important building blocks for highperformance organic devices. Patterning organic crystals with high precision and accurately positioning them at the target position are major challenges for integrated devices. However, uncontrollable dewetting of the conventional solution method leads to as-prepared micro-nanocrystals with high defect-state density, low crystalline quality, and disordered distribution, which impair the uniformity of the device performance and limit integration. By regulating the solution position with a template and guiding the solution flow direction under gravity, aligned organic microwire arrays and polygonal patterns were fabricated. The polarization-sensitive photodetector exhibited responsivity up to 1234 A W −1 , linear dynamic range of 148 dB, I photo /I dark of 10 4 , response time as low as 1.1 ms, and dichroic ratio up to 2.1. Given the homogeneity of microwire arrays, the device-to-device variation was reduced to 3.58%, resulting in high-quality imaging. This study provides new insights into organic micro/nanocrystal patterning and device integration.

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Section: Introductionmentioning

confidence: 99%

Highly aligned organic microwire crystal arrays for high-performance polarization-sensitive photodetectors and image sensors

Sun

et al. 2022

Sci. China Mater.

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“…Given low-dimensional light-emitting materials as the gain medium, the perfect cavity geometry would be a planar nano-and microstructure that confines light into a scale comparable to, or smaller than the size of the emitting materials. Examples of planar optical cavities are plasmonic resonators, [13] high-index dielectric resonators, [14,15] whispering gallery mode (WGM) resonators, [16,17] and photonic crystal (PC) resonators. [18] Each has different cavity characteristics due to being composed of different materials and exploiting different fundamental physics.…”

Section: Doi: 101002/adma202203889mentioning

confidence: 99%

“…Dielectric WGM cavities can produce high quality (Q) factors of up to 10 9 . [ 16 ] PC cavities have been highlighted again due to the semi‐infinite Q factor enabled by the phenomenon of bound‐states‐in‐the‐continuum. [ 19 ] Topological PCs are a great platform to handle the spin‐dependent properties of light‐emitting materials.…”

Section: Introductionmentioning

confidence: 99%

Planar Optical Cavities Hybridized with Low‐Dimensional Light‐Emitting Materials

et al. 2022

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Figure 6. a) Schematic and optical image of a nanolaser that consists of Si PC and monolayer Molybdenum telluride. b) i) The illustration of the upconversion nanolaser that consists of UCNPs coated on the plasmonic lattice. ii) The diagram exhibits the energy transfer mechanism in UCNP. c) Perovskite-based lasing device. Left upper illustration is the near-field profile representing third-order Mie resonance. SEM image shows the CsPbBr 3cube with a size of 310 nm. In the emission spectrum, an extremely sharp peak that stands for lasing action is observed. Inset represents the interference pattern that appears in the optical image of the perovskite cube. d) Perovskite-based BIC lasing device. Schematic shows the vortex lasing system composed of hole patterned perovskite film and a blue laser for pumping. i) The dispersion relation is photonic bands of the perovskite hole pattern in the direction of ΓX and ΓM around 550 nm. ii) The donut-shaped far-field profile and self-interference pattern. The white arrows denote the fork shape which means the vortex beam nature. (a) Reproduced with permission. [198] Copyright 2017, Springer Nature. (b) Reproduced with permission. [156]

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“…When matter strongly couples to electromagnetic waves, new quasiparticles called polaritons can emerge, in which the excitation energy can be coherent exchange between the two oscillators, leading to a vacuum Rabi splitting. [1][2][3][4][5][6] Typically, strong coupled hybrid states can be formed by placing materials into an optical microcavity, as a consequence, microcavity polaritons with half matter and half-light nature are potential candidates for DOI: 10.1002/lpor.202200176 optoelectronic devices. First, originating from the light component, fascinating properties have been observed in microcavity polaritons, such as smaller effective mass and faster propagation velocity.…”

Section: Introductionmentioning

confidence: 99%

Dynamics of Spin‐Dependent Polariton–Polariton Interactions in Two‐Dimensional Layered Halide Organic Perovskite Microcavities

Liu

Wang

Song

et al. 2022

Laser & Photonics Reviews

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Half-light and half-matter exciton polaritons have demonstrated profound impacts on coherent quantum phenomena. Two-dimensional (2D) organic−inorganic perovskite semiconductors, exhibiting large exciton binding energy and spin-based behavior, are an excellent platform for the study of exciton polaritons at room temperature. However, the implementation of these fascinating coherent phenomena is still constrained by the lack of an understanding of the crucial polariton-polariton interaction effects. Here, an experimental observation of spin-dependent polariton-polariton interactions in a prototype 2D organic−inorganic perovskite microcavity by circularly polarization-resolved transient absorption (TA) measurements is reported. A power-dependent blue shift of the lower polariton bands with the same spin is clearly revealed, whereas the energy band of the polariton bands with the opposite spin is almost not changed. Spectacularly, it is found that the energy band blue shift mainly takes place before the spin depolarization, which provides accurate evidence for the spin-dependent polariton-polariton interactions. Furthermore, the strong coherent polariton-phonon coupling of perovskite microcavity has also been detected firstly in ultrafast TA dynamics. These results demonstrate that microcavity polaritons inheriting the matter properties from their excitonic constituents exhibit strong nonlinear interactions and pave the way for realizing coherent quantum phenomena at room temperature.

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Spontaneous emission in micro- or nanophotonic structures

Cited by 35 publications

References 360 publications

Highly aligned organic microwire crystal arrays for high-performance polarization-sensitive photodetectors and image sensors

Highly aligned organic microwire crystal arrays for high-performance polarization-sensitive photodetectors and image sensors

Planar Optical Cavities Hybridized with Low‐Dimensional Light‐Emitting Materials

Dynamics of Spin‐Dependent Polariton–Polariton Interactions in Two‐Dimensional Layered Halide Organic Perovskite Microcavities

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