公开(公告)号：US20080251118A1

公开(公告)日：2008-10-16

申请号：US12078315

申请日：2008-03-28

Applicant: Carsten Rohr ,  Keith W.J. Barnham ,  Nicholas Ekins-Daukes ,  James P. Connolly ,  Iam M. Ballard ,  Massimo Mazzer

Inventor： Carsten Rohr ,  Keith W.J. Barnham ,  Nicholas Ekins-Daukes ,  James P. Connolly ,  Iam M. Ballard ,  Massimo Mazzer

IPC: H01L31/00

CPC classification number: B82Y20/00 ,  H01L31/035236 ,  H01L31/0735 ,  H01L31/075 ,  H02S10/30 ,  Y02E10/544 ,  Y02E10/548

Abstract: A method of forming a photovoltaic device includes a plurality of quantum wells and a plurality of barriers. The quantum wells and barriers are disposed on an underlying layer. The barriers alternate with the quantum wells. One of the plurality of quantum wells and the plurality of barriers is comprised of tensile strained layers and the other of the plurality of quantum wells and the plurality of barriers is comprised of compressively strained layers. The tensile and compressively strained layers have elastic properties. The method includes selecting compositions and thicknesses of the barriers and quantum wells taking into account the elastic properties such that each period of one tensile strained layer and one compressively strained layer exerts substantially no shear force on a neighboring structure; providing the underlying layer; and forming the quantum sells and barriers on the underlying layer according to the derived compositions and thicknesses.

Abstract translation: 形成光伏器件的方法包括多个量子阱和多个屏障。 量子阱和屏障设置在下层上。 这些障碍与量子阱交替。 多个量子阱和多个势垒中的一个由拉伸应变层组成，多个量子阱中的另一个和多个势垒由压缩应变层组成。 拉伸和压缩应变层具有弹性特性。 该方法包括考虑弹性特性来选择阻挡层和量子阱的组成和厚度，使得一个拉伸应变层和一个压缩应变层的每个周期基本上不对相邻结构施加剪切力; 提供下层; 并根据衍生的组成和厚度在下层形成量子销售和障碍。