载流子的热弛豫过程与扩散过程在整个衰减过程中所占的比例，取决于激发光子的能量。

The proportion between the thermalization process and diffusion process possess in all the decay process is determined by photon energy of excitation.

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对于固相合成和喷雾热解法两种方法制备出的样品进行了比较，确定了喷雾热解的制备方法可以使得组分混合的均匀从而导致样品对激发光有更加充分的吸收。

Two preparation methods are compared and confirm that the spray pyrolysis may have an average spread of the particle size distribution, which will lead to the effective absorption of the sample.

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