All-chalcogenide middle infrared dielectric reflector and filter

Kohoutek, T.; Orava, Jiří; Přikryl, Jan; Wágner, T.; Frumar, M.

doi:10.1016/j.jnoncrysol.2010.10.028

Cited by 8 publications

(4 citation statements)

References 21 publications

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“…a-As 2 S 3 is known as a low-loss optical waveguide material that is especially useful for IR applications. With an optical band gap of 2.25 eV, As–S glasses are transparent from the NIR down to mid-IR cutoff wavelengths of ∼10 μm while showing high refractive index ( n = 2.4 at λ = 4.8 μm) and good nonlinear optical properties. These features make As–S glasses an ideal host matrix for encapsulating IR-active NCs.…”

mentioning

confidence: 99%

Inorganically Functionalized PbS–CdS Colloidal Nanocrystals: Integration into Amorphous Chalcogenide Glass and Luminescent Properties

et al. 2012

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mentioning

confidence: 99%

Inorganically Functionalized PbS–CdS Colloidal Nanocrystals: Integration into Amorphous Chalcogenide Glass and Luminescent Properties

et al. 2012

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“… Amorphous As 2 S 3 was selected as the matrix because it is a well-known low-loss optical waveguide material that is especially useful for IR applications. As 2 S 3 has an optical band gap of 2.25 eV (which is transparent from the NIR down to mid-IR cutoff wavelengths of ∼10 μm), shows a high refractive index, and displays good nonlinear optical properties. − The resulting all-inorganic thin film with PbS/CdS NCs dispersed uniformly in an amorphous As 2 S 3 matrix featured stable IR luminescence in the telecommunication wavelength region. The high optical dielectric constant of As 2 S 3 also reduced the dielectric screening of the radiating field inside the QD, enabling fast radiative recombination in PbS/CdS NCs.…”

Section: Applications Of Colloidal Il-capped Ncsmentioning

confidence: 99%

Colloidal Inorganic Ligand-Capped Nanocrystals: Fundamentals, Status, and Insights into Advanced Functional Nanodevices

et al. 2021

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Colloidal nanocrystals (NCs) are intriguing building blocks for assembling various functional thin films and devices. The electronic, optoelectronic, and thermoelectric applications of solution-processed, inorganic ligand (IL)-capped colloidal NCs are especially promising as the performance of related devices can substantially outperform their organic ligand-capped counterparts. This in turn highlights the significance of preparing IL-capped NC dispersions. The replacement of initial bulky and insulating ligands capped on NCs with short and conductive inorganic ones is a critical step in solution-phase ligand exchange for preparing IL-capped NCs. Solution-phase ligand exchange is extremely appealing due to the highly concentrated NC inks with completed ligand exchange and homogeneous ligand coverage on the NC surface. In this review, the state-of-the-art of IL-capped NCs derived from solution-phase inorganic ligand exchange (SPILE) reactions are comprehensively reviewed. First, a general overview of the development and recent advancements of the synthesis of IL-capped colloidal NCs, mechanisms of SPILE, elementary reaction principles, surface chemistry, and advanced characterizations is provided. Second, a series of important factors in the SPILE process are offered, followed by an illustration of how properties of NC dispersions evolve after ILE. Third, surface modifications of perovskite NCs with use of inorganic reagents are overviewed. They are necessary because perovskite NCs cannot withstand polar solvents or undergo SPILE due to their soft ionic nature. Fourth, an overview of the research progresses in utilizing IL-capped NCs for a wide range of applications is presented, including NC synthesis, NC solid and film fabrication techniques, field effect transistors, photodetectors, photovoltaic devices, thermoelectric, and photoelectrocatalytic materials. Finally, the review concludes by outlining the remaining challenges in this field and proposing promising directions to further promote the development of IL-capped NCs in practical application in the future.

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“…Arsenic trisulfide (As 2 S 3 ) glasses have good transmittance of infrared radiation up to λ = 10 μm; they also have high refractive index, low melting temperature and high optical nonlinearity [8,9]. Therefore, As 2 S 3 glass may be an ideal host matrix for NIR-emitting QDs.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence from PbS quantum dots and PbS/CdS core/shell quantum dots mixed with As2S3 glass

Cao

Heo

Kwon

et al. 2016

Journal of Non-Crystalline Solids

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All-chalcogenide middle infrared dielectric reflector and filter

Cited by 8 publications

References 21 publications

Inorganically Functionalized PbS–CdS Colloidal Nanocrystals: Integration into Amorphous Chalcogenide Glass and Luminescent Properties

Inorganically Functionalized PbS–CdS Colloidal Nanocrystals: Integration into Amorphous Chalcogenide Glass and Luminescent Properties

Colloidal Inorganic Ligand-Capped Nanocrystals: Fundamentals, Status, and Insights into Advanced Functional Nanodevices

Photoluminescence from PbS quantum dots and PbS/CdS core/shell quantum dots mixed with As2S3 glass

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