CALCULATION OF LUMINOUS EFFICACY,AND BOTH POWER AND QUANTUM EFFICIENC IES OF LED BY DIRECT INTEGRATION OF GAUSSIAN FUNCTIONS
用高斯函数积分计算发光二极管(LED)的光视效能、功率效率和量子效率的方法

The visibility aurve and the spectral energy distribution curve of light emitted by semiconductor diodes are approximated by Gaussian functions with appropriate parameters. The buminous efficiency and both power and quantum efficiencies of luminescence of LED can then be evaluated by direct integration when the total luminous flux was measured. Comparison of the calculated values with those obtained by means of planimeter shows fairly good agreement for three kinds of LED: GaP. GaAs0.62P0.38 and Ga0.68Al0.32As.