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Unique Color Converter Architecture Enabling Phosphor-in-Glass (PiG) Films Suitable for High-Power and High-Luminance Laser-Driven White Lighting
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-04-11 00:00:00 , DOI: 10.1021/acsami.8b03168 Peng Zheng 1 , Shuxing Li 1 , Le Wang 2 , Tian-Liang Zhou 1 , Shihai You 1 , Takashi Takeda 3 , Naoto Hirosaki 3 , Rong-Jun Xie 1
ACS Applied Materials & Interfaces ( IF 8.3 ) Pub Date : 2018-04-11 00:00:00 , DOI: 10.1021/acsami.8b03168 Peng Zheng 1 , Shuxing Li 1 , Le Wang 2 , Tian-Liang Zhou 1 , Shihai You 1 , Takashi Takeda 3 , Naoto Hirosaki 3 , Rong-Jun Xie 1
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As a next-generation high-power lighting technology, laser lighting has attracted great attention in high-luminance applications. However, thermally robust and highly efficient color converters suitable for high-quality laser lighting are scarce. Despite its versatility, the phosphor-in-glass (PiG) has been seldom applied in laser lighting because of its low thermal conductivity. In this work, we develop a unique architecture in which a phosphor-in-glass (PiG) film was directly sintered on a high thermally conductive sapphire substrate coated by one-dimensional photonic crystals. The designed color converter with the composite architecture exhibits a high internal quantum efficiency close to that of the original phosphor powders and an excellent packaging efficiency up to 90%. Furthermore, the PiG film can even be survived under the 11.2 W mm–2 blue laser excitation. Combining blue laser diodes with the YAG-PiG-on-sapphire plate, a uniform white light with a high luminance of 845 Mcd m–2(luminous flux: 1839 lm), luminous efficacy of 210 lm W–1, and correlated color temperature of 6504 K was obtained. A high color rendering index of 74 was attained by adding a robust orange or red phosphor layer to the architecture. These outstanding properties meet the standards of vehicle regulations, enabling the PiG films with the composite architecture to be applied in automotive lighting or other high-power and high-luminance laser lighting.
中文翻译：
独特的色彩转换器架构，使玻璃荧光粉（PiG）膜适用于高功率和高亮度激光驱动的白光照明
作为下一代大功率照明技术，激光照明在高亮度应用中引起了极大的关注。但是，缺少适用于高质量激光照明的热耐用且高效的颜色转换器。尽管玻璃荧光粉（PiG）具有多功能性，但由于其导热系数低，因此很少用于激光照明。在这项工作中，我们开发了一种独特的体系结构，其中将玻璃中磷（PiG）膜直接烧结在由一维光子晶体覆盖的高导热蓝宝石衬底上。设计的具有复合体系结构的颜色转换器具有接近原始荧光粉粉末的高内部量子效率，以及高达90％的出色封装效率。此外，PiG膜甚至可以在11.2 W毫米的压力下幸存下来–2蓝色激光激发。将蓝色激光二极管与YAG-PiG-on-sapphire板相结合，可产生均匀的白光，具有845 Mcd m –2的高亮度（光通量：1839 lm），210 lm W –1的发光效率以及相关的色温获得6504K。通过在体系结构中添加坚固的橙色或红色荧光粉层，可以达到74的高显色指数。这些出色的性能符合车辆法规标准，使具有复合结构的PiG膜可用于汽车照明或其他高功率和高亮度激光照明。
更新日期：2018-04-11
中文翻译：
独特的色彩转换器架构，使玻璃荧光粉（PiG）膜适用于高功率和高亮度激光驱动的白光照明
作为下一代大功率照明技术，激光照明在高亮度应用中引起了极大的关注。但是，缺少适用于高质量激光照明的热耐用且高效的颜色转换器。尽管玻璃荧光粉（PiG）具有多功能性，但由于其导热系数低，因此很少用于激光照明。在这项工作中，我们开发了一种独特的体系结构，其中将玻璃中磷（PiG）膜直接烧结在由一维光子晶体覆盖的高导热蓝宝石衬底上。设计的具有复合体系结构的颜色转换器具有接近原始荧光粉粉末的高内部量子效率，以及高达90％的出色封装效率。此外，PiG膜甚至可以在11.2 W毫米的压力下幸存下来–2蓝色激光激发。将蓝色激光二极管与YAG-PiG-on-sapphire板相结合，可产生均匀的白光，具有845 Mcd m –2的高亮度（光通量：1839 lm），210 lm W –1的发光效率以及相关的色温获得6504K。通过在体系结构中添加坚固的橙色或红色荧光粉层，可以达到74的高显色指数。这些出色的性能符合车辆法规标准，使具有复合结构的PiG膜可用于汽车照明或其他高功率和高亮度激光照明。
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