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Article
Photon recycling in halide perovskite solar cells for higher efficiencies
The efficiency of halide perovskite solar cells has progressed rapidly through a series of major breakthroughs. Currently, a certified efficiency of 25.2% has been achieved for a solar cell using a polycrystal...
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Article
Steps toward efficient inorganic–organic hybrid perovskite solar cells
Crystalline silicon dominates the solar panel industry today but remains relatively expensive to manufacture. If devices could be fabricated from inexpensive materials by a simple solution process without the ...
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Article
Effects of Surface Oxide on the Nitridation Behavior of Aluminum Particles
A detailed transmission electron microscopy study coupled with electron energy loss spectroscopy was conducted on AlN formed by the direct nitridation of Al particles under nitrogen atmosphere. The nitridation...
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Article
Enhanced photovoltaic properties of overlayer-coated nanocrystalline TiO2 dye-sensitized solar cells (DSSCs)
TiO2 dye-sensitized solar cells (DSSCs) coated with various oxide layers were fabricated via a screen printing method and the effects of the oxide layers on the photovoltaic properties were systematically investi...
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Article
Electrical and optical properties of epitaxial and polycrystalline undoped and Al-doped ZnO thin films grown by pulsed laser deposition
Undoped and Al-doped (1.6%) ZnO films were prepared on (0001) sapphire and fused silica substrates using a pulsed laser deposition technique. The ZnO films on sapphire substrates were epitaxially grown, while ...
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Article
Dielectric properties of nanocrystalline TiO2 prepared using spark plasma sintering
Ultra fine rutile powders (below 50 nm) were prepared via the sol-gel process and bulk type TiO2 specimens were fabricated using spark plasma sintering (SPS). The TiO2 specimen sintered at a low temperature (720∘
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Article
Influence of stress on structural and dielectric anomaly of Bi2(Zn1/3Ta2/3)207 thin films
Bi2(Zn1/3Ta2/3)2O7 (BZT) thin films were grown on the (111) oriented Pt/TiOx/SiO2/Si substrates using a pulsed laser deposition (PLD) technique. BZT thin films deposited at an oxygen partial pressure of 400 mTorr...