TY - GEN
T1 - Inorganic nanocomposite films with polymer nanofillers made by the concurrent multi-beam multi-target pulsed laser deposition
AU - Darwish, Abdalla M.
AU - Sarkisov, Sergey S.
AU - Mele, Paolo
AU - Saini, Shrikant
AU - Moore, Shaelynn
AU - Bastian, Tyler
AU - Dorlus, Wydglif
AU - Zhang, Xiaodong
AU - Koplitz, Brent
N1 - Funding Information:
Dillard team appreciates the financial support from US Air Force Office of Scientific Research Grant No. FA9550-12-1-0068 and Army Grant No. W911NF -15-1-0446. The authors are thankful to Dr. Junichiro Shiomi group from the University of Tokyo for their preliminary measurements of the thermal conductivity of the films.
PY - 2017
Y1 - 2017
N2 - We report on the new class of inorganic nanocomposite films with the inorganic phase hosting the polymer nanofillers made by the concurrent multi-beam multi-target pulsed laser deposition of the inorganic target material and matrix assisted pulsed laser evaporation of the polymer (MBMT-PLD/MAPLE). We used the exemplary nanocomposite thermoelectric films of aluminum-doped ZnO known as AZO with the nanofillers made of poly(methyl methacrylate) known as PMMA on various substrates such as SrTiO3, sapphire, fused silica, and polyimide. The AZO target was ablated with the second harmonic (532 nm) of the Nd:YAG Q-switched laser while PMMA was evaporated from its solution in chlorobenzene frozen in liquid nitrogen with the fundamental harmonic (1064 nm) of the same laser (50 Hz pulse repetition rate). The introduction of the polymer nanofillers increased the electrical conductivity of the nanocomposite films (possibly due to the carbonization of PMMA and the creation of additional channels of electric current) three times and reduced the thermal conductivity by 1.25 times as compared to the pure AZO films. Accordingly, the increase of the thermoelectric figure-of merit ZT would be ∼ 4 times. The best performance was observed for the sapphire substrates where the films were the most uniform. The results point to a huge potential of the optimization of a broad variety of optical, opto-electronic, and solar-power nanocomposite inorganic films by the controllable introduction of the polymer nanofillers using the MBMT-PLD/MAPLE method.
AB - We report on the new class of inorganic nanocomposite films with the inorganic phase hosting the polymer nanofillers made by the concurrent multi-beam multi-target pulsed laser deposition of the inorganic target material and matrix assisted pulsed laser evaporation of the polymer (MBMT-PLD/MAPLE). We used the exemplary nanocomposite thermoelectric films of aluminum-doped ZnO known as AZO with the nanofillers made of poly(methyl methacrylate) known as PMMA on various substrates such as SrTiO3, sapphire, fused silica, and polyimide. The AZO target was ablated with the second harmonic (532 nm) of the Nd:YAG Q-switched laser while PMMA was evaporated from its solution in chlorobenzene frozen in liquid nitrogen with the fundamental harmonic (1064 nm) of the same laser (50 Hz pulse repetition rate). The introduction of the polymer nanofillers increased the electrical conductivity of the nanocomposite films (possibly due to the carbonization of PMMA and the creation of additional channels of electric current) three times and reduced the thermal conductivity by 1.25 times as compared to the pure AZO films. Accordingly, the increase of the thermoelectric figure-of merit ZT would be ∼ 4 times. The best performance was observed for the sapphire substrates where the films were the most uniform. The results point to a huge potential of the optimization of a broad variety of optical, opto-electronic, and solar-power nanocomposite inorganic films by the controllable introduction of the polymer nanofillers using the MBMT-PLD/MAPLE method.
KW - Nanocomposites
KW - matrix assisted pulsed laser evaporation
KW - multi-beam pulsed laser deposition
KW - polymer nanofillers
KW - pulsed laser deposition
KW - thermoelectric energy harvesters
KW - thermoelectric films
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U2 - 10.1117/12.2273400
DO - 10.1117/12.2273400
M3 - Conference contribution
AN - SCOPUS:85034019380
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Photonic Fiber and Crystal Devices
A2 - Yin, Shizhuo
A2 - Guo, Ruyan
PB - SPIE
T2 - Photonic Fiber and Crystal Devices: Advances in Materials and Innovations in Device Applications XI 2017
Y2 - 6 August 2017 through 7 August 2017
ER -