Feng RAO, Tao FANG, Zi-ling WANG, Chen CHEN. Determining the Junction Temperature of Two Phosphors-converted LED Based on Spectral Feature Parameters of the Chip[J]. Acta Photonica Sinica, 2020, 49(9): 0912002

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- Acta Photonica Sinica
- Vol. 49, Issue 9, 0912002 (2020)

Fig. 1. Comparation of LED sample and the coin

Fig. 2. The schematic diagram of optic, chromatic and electric comprehensive analyzer

Fig. 3. Normalized spectral distributions of phosphor-converted white LED

Fig. 4. Normalized spectral distribution

Fig. 5. Measured and fitted values

Fig. 6. Calibration curve

Fig. 7. Comparison of junction temperatures with different methods

Fig. 8. Normalized spectral distribution after aging

Fig. 9. Spectral feature parameter at different time

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