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Systematic Synthesis of Organic Semiconductors with Variable Band Gaps
Band Gap Isothianaphthene Organic Photovoltaics Polythiophene Semiconducting Polymers Thieno[3 4 b]thiophene
2014/11/21
Polymeric materials are attractive candidates for the fabrication of low cost, large area photovoltaic devices. Controlling the band gap of the electroactive polymer is an essential factor in optimizi...
Morphology Characterization of Low Band Gap Polymer-based Organic Photovoltaics
Morphology organic photovoltaic phase separation crystallization diffusion
2014/11/21
In bulk heterojunction (BHJ) thin film organic photovoltaics (OPV), morphology control is critical to obtain good device efficiency. Nanoscale phase separation that creates bicontinuous interpenetrati...
Band gap control via tuning of inversion degree in CdIn$_2$S$_4$ spinel
Band gap control tuning inversion degree CdIn$_2$S$_4$ spinel
2012/2/24
Based on theoretical arguments we propose a possible route for controlling the band-gap in the promising photovoltaic material CdIn$_2$S$_4$. Our \textit{ab initio} calculations show that the experime...
Wide band gap tunability in complex transition metal oxides by site-specific substitution
Wide band gap tunability complex transition metal oxides site-specific substitution
2012/2/24
Fabricating complex transition metal oxides with a tuneable band gap without compromising their intriguing physical properties is a longstanding challenge. Here we examine the layered ferroelectric bi...
Band gap tuning in ferroelectric Bi4Ti3O12 by alloying LaTMO3 (TM = Ti, V, Cr, Mn, Co, Ni, and Al)
Band gap tuning ferroelectric Bi4Ti3O12 alloying LaTMO3
2012/2/24
We fabricated ferroelectric Bi4Ti3O12 (BiT) single crystalline thin films site-specifically substituted with LaTMO3 (TM = Al, Ti, V, Cr, Mn, Co, and Ni) on SrTiO3 substrates by pulsed laser epitaxy. W...
Complex k band diagrams of 3D metamaterial/photonic crystals
Complex k band diagrams 3D metamaterial photonic crystals
2011/9/9
A finite element method (FEM) for solving the complex valued k(w) vs. w dispersion curve of a 3D metamaterial/photonic crystal system is presented. This 3D method is a generalization of a previously r...
华南理工大学材料科学与工程导论课件Lecture-10 Energy band Structure of Inorganic and Nonmetallic Materials
华南理工大学 材料科学与工程导论 课件 Lecture-10 Energy band Structure Inorganic Nonmetallic Materials
2009/12/7
华南理工大学材料科学与工程导论课件Lecture-10 Energy band Structure of Inorganic and Nonmetallic Materials。
Unconventional pairing in doped band insulators on a honeycomb lattice: the role of the disconnected Fermi surface and a possible application to superconducting -MNCl (M = Hf, Zr)
-MNCl superconductivity band insulator Fermi surface spin fluctuations pnictides
2010/10/12
We investigate the possibility of realizing unconventional superconductivity in doped band
insulators on the square and honeycomb lattices. The latter lattice is found to be a good
candidate due to ...
First-principles electronic-band calculations on organic conductors
first-principles calculation electronic structure organic conductor
2010/1/19
Predicting electronic-band structures is a key issue in understanding the properties of materials or in materials design. In this review article, application examples of first-principles calculations,...