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LED
measurements |
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LED Metrology |
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1. Radiometric quantity
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2. Photometric quantity
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3. Colorimetry |
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Structure
analysis |
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Morphology analysis |
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1. Scanning Electron Microscopy
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2. Optical Microscopy |
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Crystal structure studied |
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1. Scanning Electron Microscopy |
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2. X-Ray Diffraction |
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Microstructure is studied
by subjecting sample to atomic particle
beams |
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1. Scanning Electron Microscopy
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2. Scanning Electron Microscopy |
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Chemical
and/or physical evaluation |
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Thermal Mechanical Analysis
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1. Temperature of glass
transition (Tg) measured |
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2. Coefficient of thermal
expansion measured |
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Differential Scanning
Calorimeter |
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1. Heat flow rate is measured
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2. Controlled atmosphere
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3. Controlled temperature
program |
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Thermo-Gravimetric Analysis
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1. Physical or chemical
changes identified as mass changes |
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2. Mass of a test sample
is monitored |
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3. Controlled temperature
program |
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