For PL measurement, a 514-nm Ar ion laser was used to excite each sample at the same power (80 µW), with light collected by a 50× objective lens, passed through a 550-nm long-pass filter, and analyzed by a spectrometer and Si charge-coupled device. PL QY and EL data for this study were collected using a homebuilt optical system (18 (link)). Briefly, PL QY measurements were calibrated using a ThorLabs SLS201 calibration lamp reflected off a Lambertian surface under the objective, followed with the measurement of system response by collection of the diffusely reflected excitation beam by the system spectrometer and cross-calibration with the lamp.
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Photoluminescence Measurement Protocol
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Other organizations : University of California, Berkeley, Lawrence Berkeley National Laboratory, National Tsing Hua University
Top 5 similar protocols
Variable analysis
independent variables
- Laser power (80 μW)
- Photoluminescence (PL) measurement
- Photoluminescence quantum yield (PL QY)
- Electroluminescence (EL) data
- Laser wavelength (514 nm)
- Objective lens (50×)
- Long-pass filter (550 nm)
- Spectrometer and Si charge-coupled device
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