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为了研究介质阻挡放电平面光源(DBDL)中气体放电产生的电子对DBDL光电特性的影响,本文设计并制作了一种内部涂覆有阴极射线荧光粉的平面光源,该光源内部充入了20 kPa的纯氖气,在此条件下对该光源的光谱及放电图像进行了测量与比较。实验结果表明,在高气压下仍可观察到阴极射线荧光粉被电子激发的现象,且谱线的强度随着外加电压的升高而升高。在此基础上设计了一种采用光致荧光粉和阴极射线荧光粉相混合的DBDL,结果表明,在相同的输入功率下,对Ne-10%Xe混合气体而言,当气压为20 kPa,亮度低于2000 cd/m2时,混合荧光粉型结构可以提高DBDL的亮度及发光效率(最高21.2%)。
In order to study the influence of electrons generated by gas discharge in DBDL on the photoelectric properties of DBDL, a planar light source coated with cathode ray phosphor was designed and fabricated. The light source was filled with 20 kPa Of pure neon, under the conditions of the light spectrum and discharge images were measured and compared. The experimental results show that under high pressure, the phenomenon of electron excitation of cathode ray phosphor can be observed, and the intensity of the line increases with the increase of applied voltage. On the basis of this, a DBDL based on the combination of photoluminescent phosphor and cathode ray phosphor was designed. The results show that under the same input power, when the gas pressure is 20 kPa for Ne-10% Xe mixed gas, When the brightness is lower than 2000 cd / m2, the mixed phosphor structure can improve the brightness and luminous efficiency of DBDL (up to 21.2%).