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Article
Synthesis of β-Cyclodextrin Immobilized Starch and Its Application for the Removal of Dyestuff from Waste-Water
A natural polymeric adsorbent, β-cyclodextrin immobilized starch (CS-βCD) was prepared by introducing host functional molecule β-cyclodextrin (β-CD) onto starch in presence of citric acid. The immobilization c...
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Article
Quantitative Carrier Density Wave Imaging in Silicon Solar Cells Using Photocarrier Radiometry and Lock-in Carrierography
InGaAs camera-based low-frequency homodyne and high-frequency heterodyne lock-in carrierographies (LIC) are introduced for spatially resolved imaging of optoelectronic properties of Si solar cells. Based on th...
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Article
Theoretical Analysis of Nonlinear Recombination Process and Its Influence on Diffraction Efficiency of Steady-State Photocarrier Grating
A theoretical analysis of the steady-state photocarrier grating (SSPCG), which takes the nonlinear carrier recombination processes into account, has been presented. First, the nonlinear diffusion equation, con...
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Article
Camera-Based Lock-in and Heterodyne Carrierographic Photoluminescence Imaging of Crystalline Silicon Wafers
Carrierographic (spectrally gated photoluminescence) imaging of a crystalline silicon wafer using an InGaAs camera and two spread super-bandgap illumination laser beams is introduced in both low-frequency lock...
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Article
Influence of Carrier Transport on Diffraction Efficiency of Steady-State Photocarrier Grating
A two-dimensional theoretical model of a diffractive steady-state photocarrier grating (SSPCG) has been developed. The carrier diffusion equation with a spatially periodic excitation source was solved, and an ...
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Article
Theoretical Analysis of Diffraction Efficiency of Photocarrier Grating
The diffraction efficiency of the photocarrier grating (PCG) has been theoretically analyzed. Firstly, the model of the PCG has been set up, and the distribution of the carrier concentration has been studied. ...
