Effects of germanium addition to copper phthalocyanine/fullerene-based solar cells

2012 ◽  
Vol 2 (2) ◽  
Author(s):  
Takeo Oku ◽  
Kazuma Kumada ◽  
Atsushi Suzuki ◽  
Kenji Kikuchi
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Optical Properties ◽  
Solar Cells ◽  
Copper Phthalocyanine ◽  
Energy Levels ◽  
Power Conversion ◽  
Analysis Data ◽  
Transmission Electron ◽  
Conversion Efficiencies

AbstractCopper phthalocyanine/fullerene-based solar cells were fabricated, and the electronic and optical properties were investigated. Effects of germanium addition to the solar cells were also investigated, which resulted in increase of power conversion efficiencies of the solar cells. Nanostructures of the solar cells were investigated by transmission electron microscopy and electron diffraction, which indicated formation of Ge compound nanoparticles in the copper phthalocyanine layers. Energy levels of the solar cells were discussed from the present analysis data.

Influence of doping on crystal growth, structure and optical properties of nanocrystalline CaTiO3: a case study using small-angle neutron scattering

2015 ◽  
Vol 48 (3) ◽  
pp. 836-843 ◽  
Author(s):  
Oindrila Mondal ◽  
Manisha Pal ◽  
Ripandeep Singh ◽  
Debasis Sen ◽  
Subhasish Mazumder ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Optical Properties ◽  
Crystal Growth ◽  
Small Angle Neutron Scattering ◽  
Ionic Radius ◽  
Ionic Radii ◽  
Growth Structure ◽  
Transmission Electron ◽  
The Difference

The effect of dopant size (ionic radius) on the crystal growth, structure and optical properties of nanocrystalline calcium titanate, CaTiO3(CTO), have been studied using small-angle neutron scattering. X-ray diffraction, along with high-resolution transmission electron microscopy, confirms the growth of pure nanocrystalline CTO. Rietveld analysis reveals that the difference of ionic radii between dopant and host ions induces strain within the lattice, which significantly affects the lattice parameters. The induced strain, due to the difference of ionic radii, causes the shrinkage of the optical band gap, which is manifested by the redshift of the absorbance band. Mesoscopic structural analysis using scattering techniques demonstrates that the ionic radius of the dopant influences the agglomeration behaviour and particle size. A high-resolution transmission electron microscopy study reconfirms the formation of pure highly crystalline CTO nanoparticles.

scholarly journals Polyvinylpyrrolidone Nanofibers Encapsulating an Anhydrous Preparation of Fluorescent SiO2–Tb3+ Nanoparticles

Nanomaterials ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 510 ◽  
Author(s):  
Jianhang Shi ◽  
Yanxin Wang ◽  
Linjun Huang ◽  
Peng Lu ◽  
Qiuyu Sun ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Optical Properties ◽  
Hybrid Nanoparticles ◽  
Hybrid Nanofibers ◽  
Transmission Electron ◽  
Potential Applications ◽  
Composition Structure ◽  
Photoluminescent Materials ◽  
Influence Of Ph

A novel anhydrous preparation of silica (SiO2)-encapsulated terbium (Tb3+) complex nanoparticles has been investigated. The SiO2-Tb3+ nanoparticles are incorporated in electrospun polyvinylpyrrolidone hybrid nanofibers. Transmission electron microscopy confirms that Tb3+ complexes are uniformly and stably encapsulated in or carried by nanosilica. The influence of pH on the fluorescence of Tb3+ complexes is discussed. The properties, composition, structure, and luminescence of the resulting SiO2–Tb3+ hybrid nanoparticles are investigated in detail. There is an increase in the fluorescence lifetime of SiO2–Tb3+ nanoparticles and SiO2–Tb3+/polyvinylpyrrolidone (PVP) hybrid nanofibers compared with the pure Tb3+ complexes. Due to the enhanced optical properties, the fluorescent hybrid nanofibers have potential applications as photonic and photoluminescent materials.

Aberration-corrected transmission electron microscopy analyses of GaAs/Si interfaces in wafer-bonded multi-junction solar cells

2013 ◽  
Vol 134 ◽  
pp. 55-61 ◽  
Author(s):  
Dietrich Häussler ◽  
Lothar Houben ◽  
Stephanie Essig ◽  
Mert Kurttepeli ◽  
Frank Dimroth ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solar Cells ◽  
Transmission Electron ◽  
Aberration Corrected

Nanomorphology of P3HT:PCBM-based Organic Solar Cells Analyzed by Low-Energy Scanning Transmission Electron Microscopy

2012 ◽  
Vol 18 (S2) ◽  
pp. 1234-1235 ◽  
Author(s):  
M. Pfaff ◽  
E. Müller ◽  
P. Müller ◽  
D. Gerthsen ◽  
M.G. Klein ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solar Cells ◽  
Organic Solar Cells ◽  
Scanning Transmission Electron Microscopy ◽  
Low Energy ◽  
Scanning Transmission Electron ◽  
Transmission Electron ◽  
Scanning Transmission

Extended abstract of a paper presented at Microscopy and Microanalysis 2012 in Phoenix, Arizona, USA, July 29 – August 2, 2012.

scholarly journals Study of Arsenic Doped CdSeTe Solar Cells Using Transmission Electron Microscopy

2020 ◽  
Vol 26 (S2) ◽  
pp. 1232-1234
Author(s):  
Jinglong Guo ◽  
Abhinav Sharma ◽  
Amit Munshi ◽  
Carey Reich ◽  
Adam Danielson ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solar Cells ◽  
Transmission Electron

Near-Infrared Quantum Cutting Nanophosphors for Solar Cells

2011 ◽  
Vol 366 ◽  
pp. 173-176 ◽  
Author(s):  
Su Wen Li
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Solar Cells ◽  
Near Infrared ◽  
Photoluminescence Spectra ◽  
X Ray ◽  
Transmission Electron ◽  
Nir Emission ◽  
Quantum Cutting ◽  
Scanning Electron

An efficient near-infrared (NIR) quantum cutting (QC) nanophospors with Ce3+, Yb3+ codoped in CaF2 had been synthesized by hydrothermal method and characterized by X-ray powder diffraction, scanning electron microscope, transmission electron microscopy, photoluminescence spectra and decay dynamics. The nanoparticles were uniform and monodisperse. Under the excitation of 5d level of Ce3+, an intense NIR emission at 900-1050nm was observed which match to the energy of Si band gap of Si - based solar cells. In the Ce3+, Yb3+ codoped CaF2, the lifetime of Ce3+ decreases Superscript textand the quantum efficiency (QE) increases with increasing Yb3+ concentration.

Optical Properties of Nanostructured Mesoporous Semiconductor Films

2004 ◽  
Vol 822 ◽  
Author(s):  
Iris Nandhakumar ◽  
Timothy Gabriel ◽  
Xiahong Li ◽  
George S. Attard ◽  
Matthew Markham ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Optical Properties ◽  
Liquid Crystal ◽  
Reflectance Spectroscopy ◽  
Semiconductor Films ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Liquid Crystal Templating

AbstractDirect liquid crystal templating from non-ionic polyoxyethylene surfactants has been utilised to produce well-defined birefringent films of nanostructured cadmium telluride with mesoporous architectures of extended spatial periodicities. The template mixtures and films were characterised by X-ray diffraction, transmission electron microscopy and polarising optical microscopy to ascertain the presence of a regular nanostructure. UV-VIS reflectance spectroscopy was employed to investigate the films' optical properties.

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