公开(公告)号：US20160322514A1

公开(公告)日：2016-11-03

申请号：US15144807

申请日：2016-05-02

Applicant: California Institute of Technology

Inventor： Harry A. Atwater ,  Rebecca Saive ,  Aleca M. Borsuk ,  Hal Emmer ,  Colton Bukowsky ,  Sisir Yalamanchili

IPC: H01L31/02 ,  H01L31/18 ,  H01L31/0232

CPC classification number: H01L31/022425 ,  H01L31/043 ,  H01L31/0547 ,  H01L31/0747 ,  Y02E10/52

Abstract: Solar cells in accordance with a number of embodiments of the invention incorporate effectively transparent 3D contacts that redirect light incident on the contacts onto the photoabsorbing surfaces of the solar cells. One embodiment includes a photoabsorbing surface and a plurality of three-dimensional contacts formed on the photoabsorbing surface. The plurality of three-dimensional contacts are spaced apart so that radiation is incident on a portion of the photoabsorbing surface. In addition, the three-dimensional contacts include at least one surface that redirects radiation incident on the three-dimensional contacts onto the photoabsorbing surface. Processes for manufacturing solar cells in accordance with many embodiments of the invention include: fabricating prototype three-dimensional contacts; forming a master structure for use in a gravure printing process using the prototype three-dimensional contacts; and forming three-dimensional contacts using a printing material formed on a substrate material using the master structure in a gravure printing process.

Abstract translation: 根据本发明的多个实施例的太阳能电池将有效透明的3D触点引入，该触点将入射到触点上的光重定向到太阳能电池的光吸收表面上。 一个实施例包括光吸收表面和形成在光吸收表面上的多个三维触点。 多个三维触点间隔开，使得辐射入射到光吸收表面的一部分上。 此外，三维触点包括将入射到三维触点上的辐射重定向到光吸收表面的至少一个表面。 根据本发明的许多实施例的用于制造太阳能电池的方法包括：制造原型三维接触; 形成用于使用原型三维触点的凹版印刷工艺中的主结构; 以及使用在凹版印刷工艺中使用主结构的在基材上形成的印刷材料形成三维接触。