M V系统位于美国

M V系统的公司收到了SBIR项目二期格兰特标题为:制造的窄带隙Nano-crystalline SiGeC薄膜使用等离子体增强化学气相沉积(PECVD) "技术。资助他们的他们的奖是根据2009年美国复苏与再投资法案》项目是开发薄膜串联太阳能电池,包括纳米晶体硅和硅碳(实际和实际:C)吸收材料,与~ 20%的转换效率。第一阶段项目成功开发的一个关键组件,即内在实际:C带隙,如~ 1.5 eV和具有良好的光电性能。将使用这个关键材料最初在第二阶段制造细胞单个连接配置的效率目标~ 10%。以前,发达的“设备质量”实际材料,例如~ 1.1 ev,是用于生产太阳能电池效率~ 8%。集成这两个设备在串联连接配置~ 18%预计将产生的效益。进一步改善串联连接的设备效率,~ 20%,可以实现通过使用缓冲层的p /我/ n或接口和通过增加晶粒尺寸将提高开路电压、挥发性有机化合物。更高的效率薄膜串联太阳能电池将至关重要实现必要的低成本实现广泛采用的光伏发电系统。M V系统的公司收到了SBIR第一阶段资助项目的标题为:制造的窄带隙nano-crystalline SiGeC薄膜使用等离子体增强化学气相沉积(PECVD) "技术。他们的项目将开发纳米晶体SiGeC薄膜的光学带隙(例如)1.6 - -1.8 eV的范围,和增强吸收特征,导致低成本、高效(> 20%)光伏设备。 Previous attempts at improving the photovoltaic efficiency have not been consistent and successful. The proposed approach uses plasma-enhanced chemical vapor deposition (PECVD) technique to deposit these films, which allows greater control of the process by being able to manipulate the plasma and electron temperatures to control the ion density in the plasma, with an independent control of the process parameters. This flexibility does not exist in the currently used techniques. With the proposed technique, stable and consistent films of SiGeC can be deposited on the desired substrate at moderate temperatures. If successfully developed, this technique could provide higher efficiency solar cells for the alternative energy market. The goal of highly stable films, high deposition efficiency and process scalability for large-scale manufacturing can only be achieved if the basic process can be proven. The broader impacts of this research will be in the low-cost photovoltaic (PV) devices for power generation market. If successfully completed, this research could lead to a strong partnership between solar cell manufacturers and equipment manufacturers, leading to a potentially lucrative photovoltaics market. Currently, electricity generated with available PV devices is 3-4 times more expensive as the conventional electricity. The selected materials (Si, Ge and C) for the thin film are abundantly available, which can significantly reduce the raw materials costs. A large body of basic knowledge of the requirements of solar electricity for the competitive market already exists, which makes the development of the process with a realistic performance target easy to achieve. The main challenge for achieving this goal lies in being able to control the deposition process to assure a stable and robust process, as the previous work has not been able to achieve consistent results. The initial target of producing a triple-junction thin-film solar cell is a worthy first product demonstration, which will prove the efficacy of the proposed technique, and attract third-party funding with little difficulty.