SBIR Phase I: Highest Brightness Electroluminescent (and Cathodoluminescent) Oxide Display Films

*** 9761108 Tompa这个小企业创新研究一期项目将研究和通用开发一系列用于绿、蓝、白电致发光和阴极致发光显示器的薄膜氧化荧光粉。最近，各种氧化物薄膜在发光显示器上显示出巨大的前景。提议者在利用和推进这些结果方面处于独特的地位。提议者计划使用MOCVD在很大范围内改变合金成分和掺杂浓度，以便快速生产和鉴定各种氧化物荧光粉。在第一阶段，申请人将研究掺杂ZnO基荧光粉薄膜：Zn2GeO4:Mn的绿色发射（改进我们的ZnSiO:Mn的结果），Mn和Ga/Ce掺杂ZnGa2O4和Znln2O4的绿色和蓝色发射，在第二阶段，申请人还将研究ZnTaO和ZnNbO荧光粉。需要解决的主要问题是提高效率、辐射寿命、亮度、多层结构以改善电导率和注入耦合，以及最大限度地减少“光管道”损失。提案人将通过现有的合作研究与开发协议与陆军研究实验室的显示设备团队合作，以充分表征我们的电影，特别是在设备物理方面。在第二阶段，申请人将以第一阶段的结果为基础，研究额外的荧光粉和多层荧光粉结构，降低退火温度，确定实际操作参数和原型EL（可能还有CL）灯。此外，在第二阶段，提案人将检查红色发射的掺杂剂，以便最终可以制造全彩色氧化物基显示器。与几家显示器公司合作，申请人将在第三阶段将结果商业化。该项目将开发用于电致发光（和阴极发光）显示器的低压薄膜荧光粉，在基于场发射体的显示器和灯具中具有很强的市场潜力。* * *

*** 9761108 Tompa This Small Business Innovation Research Phase I Project will investigate and generically develop a series of thin film oxide phosphors for green, blue and white electroluminescent and cathodoluminescent displays. Recently, a variety of oxide films have shown great promise for emissive displays. The proposer is uniquely positioned to capitalize upon and advance those results. The proposer plans to use MOCVD to vary alloy composition and dopant concentrations over great ranges in order to rapidly produce and qualify a variety of oxide phosphors. In Phase I the proposer will examine doped ZnO based phosphor films: Zn2GeO4:Mn for green emission (improving upon our ZnSiO:Mn results) and Mn and Ga/Ce doped ZnGa2O4 and Znln2O4 for green and blue emission, in Phase II the proposer will also examine ZnTaO and ZnNbO phosphors. Primary issues to be addressed are improved efficiency, radiative lifetimes, brightness, multilayer structures to improve conductivity and injection coupling, and minimization of "light piping" losses. The proposer will work with the Display Devices Team at the Army Research Laboratory through an existing Cooperative Research and Development Agreement to fully characterize our films, especially with respect to device physics. In Phase II the proposer will build upon Phase I results, investigate additional phosphors and multilayer phosphor structures, reduce annealing temperatures, determine practical operational parameters and prototype EL (and possibly CL) lamps. Also, in Phase II the proposer will examine dopants for red emission so that ultimately full color oxide based displays could be fabricated. Working the several display companies, the proposer will commercialize the results in displays in Phase III. The project will develop low voltage thin film phosphors for electroluminescent (and cathodoluminescence) based displays which have strong market potential in field emitter based displays and lamps. ***