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

*9761108 Tompa这个小型企业创新研究第一阶段项目将研究和开发一系列用于绿色、蓝色和白色电致发光和阴极发光显示器的薄膜氧化物荧光粉。最近，各种氧化物薄膜在发光显示方面显示出巨大的前景。提出者处于独特的地位，可以利用和推进这些结果。提出者计划使用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，我们将研究掺杂的氧化锌基发光体薄膜：Zn2GeO4：Mn的绿光发射性能(改进了我们的ZnSiO：Mn的研究结果)；在第二阶段，我们还将研究掺锰和掺Ga/Ce的ZnGa2O4和ZnIn2O4的绿光和蓝光性能。要解决的主要问题是提高效率、辐射寿命、亮度、多层结构以改善传导性和注入耦合，以及最大限度地减少“光管道”损失。计划者将通过现有的合作研究和开发协议与陆军研究实验室的显示设备团队合作，以全面描述我们的电影，特别是在设备物理方面。在第二阶段，计划者将在第一阶段结果的基础上，研究更多的荧光粉和多层荧光粉结构，降低热处理温度，确定实际操作参数和EL(可能还有CL)灯的原型。此外，在第二阶段，提出者将检查掺杂剂的红色发射，以便最终能够制造基于氧化物的全色显示器。该项目将与几家显示器公司合作，在第三阶段将显示器的成果商业化。该项目将开发用于场致发光(和阴极发光)显示器的低压薄膜荧光粉，该显示器在基于场发射极的显示器和灯具方面具有强大的市场潜力。***

*** 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. ***