Double pulse laser deposition of polymer nanocomposite: NaYF4:Tm3+,Yb3+films for optical sensors and light emitting applications

Darwish, Abdalla M.; Wilson, Simeon; Sarkisov, Sergey S.; Patel, Darayas

doi:10.1117/12.2027144

Cited by 7 publications

(4 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…17,18 SCLs were deposited on solar cells using the open-air multi-beam multi-target pulsed laser deposition (MBMT-PLD) method invented by D. Darwish. [19][20][21][22][23][24][25][26][27][28][29][30][31][32][33][34][35][36] The advantages of the method are low consumption of the material, potentially high accuracy of the thickness of the deposited layer (unfortunately not implemented in this work), and precise control of the concentration of the constituents along and across the deposited layer. We used two variants of the method.…”

Section: Methodsmentioning

confidence: 99%

Ultraviolet spectrum downshifting in polymer nanocomposite films for the enhancement of optoelectronic devices

Darwish,

Sarkisov,

Patel

et al. 2023

Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVII

View full text Add to dashboard Cite

We report on polymer nanocomposite films with ultraviolet (UV) spectrum down-shifting that can be transferred using the open-air multi-beam multi-target pulsed laser deposition (MBMT-PLD) on opto-electronic devices, such as photovoltaic (PV) cells, for the enhancement of their performance. The nanocomposites were made of the space-grade polymer CORIN impregnated with nanoparticles (NPs) of rare-earth (RE) doped compound NaYF 4 : Eu 3+ . NPs had a peak of down-shifted photoluminescence (PL) at 623 nm and a PL quantum yield (PLQE) of ~ 50%. The enhancement of the coated PV cells was two-fold: (a) protection from harmful solar UV radiation and (b) the increase of the PV conversion efficiency. We describe the results of characterization of the NPs using dynamic light scattering, X-ray diffraction, and optical spectroscopy. The nanocomposite films were deposited on Silicon heterojunction (SHJ), Copper-Indium-Gallium-Selenide (CIGS) and inverted metamorphic multijunction (IMM) solar cells. The cells were exposed to 365-nm UV radiation from a light emitting diode (LED). The I-V characteristics of the cells were measured with a solar simulator using AM0 filter. The proposed films improved UV stability of all three cell types: the power degradation significantly slowed down, CIGSs (by half). The proposed films have great commercial potential, especially for the applications to space power.

show abstract

Section: Methodsmentioning

confidence: 99%

Ultraviolet spectrum downshifting in polymer nanocomposite films for the enhancement of optoelectronic devices

Darwish,

Sarkisov,

Patel

et al. 2023

Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XVII

View full text Add to dashboard Cite

show abstract

“…scattering of the ejected target matter on its way toward the substrate due to collisions with air molecules. The authors, using their experience with CMBMT-PLD [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47], close the gap of knowledge on the properties of polymer nanocomposite films deposited in open air and show that, despite limitations, they can potentially function as solar spectrum downconverters.…”

Section: Introductionmentioning

confidence: 99%

Polymer nanocomposite sunlight spectrum down-converters made by open-air PLD

Darwish

Sarkisov

Wilson

et al. 2020

Nanotechnology Reviews

Self Cite

View full text Add to dashboard Cite

We report, for the first time to our knowledge, on the polymer nanocomposite sunlight spectrum down-converters made by the concurrent multi-beam multi-target pulsed laser deposition (CMBMT-PLD) of phosphor and polymer in ambient air. Phosphor PLD targets were made of down-converting rare-earth (RE)-doped fluorides NaYF4:Yb3+,Er3+, and NaYF4:Yb3+,Tm3+ with a Stokes shift of 620 nm (from 360 to 980 nm), minimizing the effect of re-absorption. The phosphors were synthesized by the wet method. Polymer target was made of poly (methyl methacrylate) known as PMMA. Target ablation was conducted with 1,064 nm beams from an Nd:YAG Q-switched laser. Beam intensity was 2.8 × 1016 W/cm2 for both targets. The substrate was a microscope glass slide. Phosphor nanoparticles with a size ranging from 10 to 50 nm were evenly distributed in the polymer matrix during deposition. The nanoparticles retained the crystalline structure and the fluorescent properties of the phosphor target. There was no noticeable chemical decomposition of the deposited polymer. The products of laser-induced reaction of the polymer target with atmospheric gases did not reach the substrate during PLD. Post-heating of the substrate at ∼90°C led to fusion of separate polymer droplets into uniform coating. Quantum yield of the down-conversion polymer nanocomposite film was estimated to be not less than ∼5%. The proposed deposition method can find its application in making commercial-size down-converter coatings for photo-voltaic solar power applications.

show abstract

“…Also, the mixing proportion in the composite film is dictated by the initial proportion of the target and thus cannot be changed in the process. These limitations were removed in the recently proposed method of multi-beam and multi-target deposition (in its double-beam/dualtarget variation) using a MAPLE polymer target and one inorganic target, each being concurrently exposed to laser beams of different wavelengths [41][42][43][44][45][46][47][48][49][50]. Using the method, nano-composite films of polymer poly(methyl methacrylate) known as PMMA doped with a rare earth (RE) inorganic upconversion phosphor compounds were prepared.…”

Section: Introductionmentioning

confidence: 99%

Polymer nano-composite films with inorganic upconversion phosphor and electro-optic additives made by concurrent triple-beam matrix assisted and direct pulsed laser deposition

Darwish

Moore

Mohammad

et al. 2017

Composites Part B: Engineering

Self Cite

View full text Add to dashboard Cite

The work was to investigate polymer nano-composite films with two inorganic additives: upconversion fluorescent phosphor NaYF 4 :Yb 3+ , Er 3+ and aluminum doped ZnO (AZO). The films were deposited using a new method of concurrent evaporation of the frozen solution of polymer poly(methyl methacrylate) (PMMA) using the matrix assisted pulsed laser evaporation (MAPLE) and the ablation of the phosphor and AZO targets using the pulsed laser deposition (PLD). Three laser beams, an infrared 1064-nm beam for the MAPLE and two 532-nm beams for the PLD targets, were concurrently used in the process. A new target holder with remote control of the target tilt was designed to provide overlapping of the plumes from the three targets and uniform mixing of the additives in the polymer film. The fabricated nano-composite films were characterized using X-ray diffraction, scanning electron microscopy (SEM), and the measurement of the quantum efficiency (QE) of the upconversion fluorescence. The films retained the crystalline structure of the inorganic additives. The size of the nano-particles varied in the range 10 to 200 nm. Upconversion QE of the films was an order of magnitude less than that of the bulk phosphor, which can be explained by lesser number of the rare-earth ions in the nano-particles in the polymer film than in the micro-grains of the bulk phosphor. The AZO additive increased QE by 1.6 times to (0.072±0.022) % more likely due to the plasmonic enhancement of the local optical infra-red pump (980 nm) field. The proposed triple-beam triple-target MAPLE/PLD method can be potentially used for making a wide variety of nano-composite films.

show abstract

Double pulse laser deposition of polymer nanocomposite: NaYF₄:Tm³⁺,Yb³⁺films for optical sensors and light emitting applications

Cited by 7 publications

References 0 publications

Ultraviolet spectrum downshifting in polymer nanocomposite films for the enhancement of optoelectronic devices

Ultraviolet spectrum downshifting in polymer nanocomposite films for the enhancement of optoelectronic devices

Polymer nanocomposite sunlight spectrum down-converters made by open-air PLD

Polymer nano-composite films with inorganic upconversion phosphor and electro-optic additives made by concurrent triple-beam matrix assisted and direct pulsed laser deposition

Contact Info

Product

Resources

About