公开(公告)号：US20110220194A1

公开(公告)日：2011-09-15

申请号：US12836511

申请日：2010-07-14

申请人： Juanita N. Kurtin ,  Alex R. Guichard ,  Steven M. Hughes ,  Alex C. Mayer ,  Oun Ho Park ,  Shawn R. Scully ,  Paul-Emile B. Trudeau ,  Colin C. Reese ,  Manav Sheoran ,  Georgeta Masson

发明人： Juanita N. Kurtin ,  Alex R. Guichard ,  Steven M. Hughes ,  Alex C. Mayer ,  Oun Ho Park ,  Shawn R. Scully ,  Paul-Emile B. Trudeau ,  Colin C. Reese ,  Manav Sheoran ,  Georgeta Masson

IPC分类号： H01L31/0232 ,  H01L31/0224

CPC分类号： H01L31/055 ,  Y02E10/52 ,  Y02E10/542

摘要： The light conversion efficiency of a solar cell (10) is enhanced by using an optical downshifting layer (30) in cooperation with a photovoltaic material (22). The optical downshifting layer converts photons (50) having wavelengths in a supplemental light absorption spectrum into photons (52) having a wavelength in the primary light absorption spectrum of the photovoltaic material. The cost effectiveness and efficiency of solar cells platforms (20) can be increased by relaxing the range of the primary light absorption spectrum of the photovoltaic material. The optical downshifting layer can be applied as a low cost solution processed film composed of highly absorbing and emissive quantum dot heterostructure nanomaterial embedded in an inert matrix to improve the short wavelength response of the photovoltaic material. The enhanced efficiency provided by the optical downshifting layer permits advantageous modifications to the solar cell platform that enhances its efficiency as well.

摘要翻译： 太阳能电池（10）的光转换效率通过与光伏材料（22）配合使用光学降速层（30）来增强。 光学换低层将具有补充光吸收光谱波长的光子（50）转换成光伏材料的初级光吸收光谱中具有波长的光子（52）。 通过放宽光伏材料的初级光吸收光谱的范围可以提高太阳能电池平台（20）的成本效益和效率。 光学换低层可以作为一种低成本的溶液处理薄膜来应用，该薄膜由嵌入惰性基质中的高吸收和发射量子点异质结构纳米材料组成，以改善光伏材料的短波长响应。 由光学降挡层提供的增强的效率允许对提高其效率的太阳能电池平台的有利的修改。