Near-infrared radiation absorption properties of covellite (CuS) using first-principles calculations

Xiao, Ling; Wu, Jianming; Ran, Jingyu; Liu, Yike; Qiu, Wei; Lu, Fanghai; Fang, Shao C.; Tang, Dongsheng; Peng, Ping

doi:10.1063/1.4962299

Cited by 22 publications

(16 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Initial works attested a purely metallic character to CuE , while the copper vacant one appears to suffer from additional damping or carrier localization due to vacancy formation [156,184,305]. The resulting dielectric functions obtained by band structure calculations of covellite CuS shows remarkable agreement with the experimental optical spectra [358]. However, questions remain as to the changes to the band structure upon vacancy formation.…”

Section: Interaction Of Copper Chalcogenide Ncs With Cations For Tail...mentioning

confidence: 55%

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

2017

View full text Add to dashboard Cite

production from the NIR plasmon resonance or bio-medical applications in the biological window. In 2 this review we highlight the recent advances in the synthesis of various different plasmonic semiconductor NCs with LSPRs covering the entire spectral range, from the mid-to the NIR. We focus on copper chalcogenide NCs and impurity doped metal oxide NCs as the most investigated alternatives to noble metals. We shed light on the structural changes upon LSPR tuning in vacancy doped copper chalcogenide NCs and deliver a picture for the fundamentally different mechanism of LSPR modification of impurity doped metal oxide NCs. We review on the peculiar optical properties of plasmonic degenerately doped NCs by highlighting the variety of different optical measurements and optical modeling approaches. These findings are merged in an exhaustive section on new and exciting applications based on the special characteristics that plasmonic semiconductor NCs bring along.

show abstract

Section: Interaction Of Copper Chalcogenide Ncs With Cations For Tail...mentioning

confidence: 55%

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

2017

View full text Add to dashboard Cite

show abstract

“…Among the different copper sulfide compounds of generic formula Cu 2− x S, covellite (CuS) has the highest free‐hole density and a strong LSPR absorption. This leads to high HCE values, which in turn translate into a large net heat delivery in the area of treatment.…”

Section: Introductionmentioning

confidence: 99%

Highly Efficient Copper Sulfide‐Based Near‐Infrared Photothermal Agents: Exploring the Limits of Macroscopic Heat Conversion

Marin

Skripka

Besteiro

et al. 2018

Small

View full text Add to dashboard Cite

Among the foreseeable therapeutic approaches at the cellular level, nanoplatform‐driven photothermal therapy is a thriving tool for the selective eradication of malignant tissues with minimal side effects to healthy ones. Hence, chemically versatile, near‐infrared absorbing plasmonic nanoparticles are distinctly appealing and most sought after as efficient photothermal agents. In this work, a straightforward method to synthesize monodisperse PEGylated copper sulfide nanoparticles of pure covellite (CuS) phase, featuring strong localized surface plasmonic resonance absorption in the near‐infrared and flexible surface chemistry, imparted by monomethyl ether polyethylene glycol molecules, is developed and optimized. These nanoparticles show a remarkable photothermal heat conversion efficiency (HCE) of 71.4%, which is among the highest for CuS systems and rivals that of plasmonic noble metal nanostructures. Moreover, through critical evaluation and mathematical modeling of the material's properties and measurement methodology, it is assessed that the calculated HCE values drastically depend on experimental conditions such as wavelength‐dependent solvent absorption properties, sol concentration, and optical path. These findings are of paramount relevance to the photothermal community, since they call for a standardization of the procedure for the evaluation of the HCE of proposed photothermal agents, in order to make the reported values universally and reliably comparable.

show abstract

“…12,13 The majority of these studies are based on the plasmonic near-infrared absorption band, which has been explicitly studied both experimentally 9,14,15 and theoretically. [16][17][18] The plasmon absorption arises from intrinsic pdoping that is dependent on the stoichiometric ratio of Cu : S; an increased sulfur content results in increased p-doping and therefore a stronger and higher energy plasmon absorption. 5,6,9,[19][20][21][22][23][24] This results in more controllability of the plasmons in comparison to traditional noble metal nanoparticles, as the charge carrier density can be modied in semiconductor plasmons in addition to their size and morphology.…”

mentioning

confidence: 99%

Novel microwave synthesis of near-metallic copper sulfide nanodiscs with size control: experimental and DFT studies of charge carrier density

2020

View full text Add to dashboard Cite

show abstract

Near-infrared radiation absorption properties of covellite (CuS) using first-principles calculations

Cited by 22 publications

References 24 publications

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

Plasmonic doped semiconductor nanocrystals: Properties, fabrication, applications and perspectives

Highly Efficient Copper Sulfide‐Based Near‐Infrared Photothermal Agents: Exploring the Limits of Macroscopic Heat Conversion

Novel microwave synthesis of near-metallic copper sulfide nanodiscs with size control: experimental and DFT studies of charge carrier density

Contact Info

Product

Resources

About