摘要
以聚碳酸酯基体与荧光粉粒子构成的功能复合膜为研究对象,结合实验和蒙特卡洛计算机数值计算方法,研究了荧光粉粒子粒径和含量对复合膜光通量与色温的影响.结果表明:荧光粉粒子含量相同时,随着粒径增大,光通量表现为先升高后降低的趋势,在粒径为4.0 μm时均具有最大值,色温则表现为先降低后升高的趋势;荧光粉粒子粒径相同时,粒径为0.8～4.0 μm,光通量与含量表现为正相关趋势,粒径为4.0～16.0 μm,光通量与含量表现为负相关趋势;最优组合为原始掺杂荧光粉粒子粒径为8.0 μm,质量分数为25%,搭配粒径为4.0 μm,质量分数为75%,对应的光通量为139.81 lm,色温为4 257 K.
Abstract
The functional composite films composed of polycarbonate matrix and phosphor particles were used as the research object to investigate the influence of the particle size and mass fraction of phosphor particles on the luminous flux and color temperature of the composite films by combining experiment and Monte Carlo numerical calculation methods.The research results show that with the increase of particle size the luminous flux increases then decreases,and reaches the maximum value when the particle size is 4.0 μm at the same mass fraction of phosphor particles.Under the same particle size between 0.8 μm to 4.0 μm,the luminous flux and mass fraction of phosphor parlicles show a positive correlation trend;the luminous flux and mass fraction of phosphor parlicles show a negative correlation trend between 4.0 μm and 16.0 μm of particle size.The optimal values are the size of original phosphor particle is 8.0 μm with the mass fraction of 25%,the size of matched phosphor particle is 4.0 μm with mass fraction of 75%,the corresponding luminous flux is 139.81 lm and the color temperature is 4 257 K.
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