利用分波法计算了薄膜电致发光器件中硫空位对电子的散射速率，并将其与其它散射机制进行了比较。研究了散射速率与电子能量及温度的关系，并比较了硫空位俘获电子前后的散射速率。提出硫空位的存在是阻碍获得高亮度蓝色薄膜电致发光器件的关键。 The scattering rate of sulfur vacancies in thin-film electroluminescent devices was calculated by using the demultiplex method, and compared with other scattering mechanisms. The relationship between scattering rate and electron energy and temperature was studied, and the scattering rates before and after sulfur vacancy trapping were compared. It is proposed that the existence of sulfur vacancies is the key to hindering the production of high brightness blue thin film electroluminescent device.