公开(公告)号：US07868247B2

公开(公告)日：2011-01-11

申请号：US12078315

申请日：2008-03-28

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

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

IPC分类号： H01L31/00

CPC分类号： B82Y20/00 ,  H01L31/035236 ,  H01L31/0735 ,  H01L31/075 ,  H02S10/30 ,  Y02E10/544 ,  Y02E10/548

摘要： 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.

摘要翻译： 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。

公开(公告)号：US20080230112A1

公开(公告)日：2008-09-25

申请号：US12076956

申请日：2008-03-25

申请人： Keith W. Barnham ,  Ian M. Ballard ,  Massimo Mazzer

发明人： Keith W. Barnham ,  Ian M. Ballard ,  Massimo Mazzer

IPC分类号： H01L31/052 ,  H01L31/06

CPC分类号： H01L31/078 ,  H01L27/14647 ,  H01L31/043 ,  H01L31/0475 ,  H01L31/061 ,  H01L2924/0002 ,  H02S10/30 ,  Y02E10/52 ,  H01L2924/00

摘要： A photovoltaic system includes a photovoltaic device that includes a lower photovoltaic cell fabricated from semiconductor material having a first bandgap, and having first electrical contacts for extraction of current from the lower cell; an electrically insulating layer monolithically fabricated on the lower photovoltaic cell; and an upper photovoltaic cell monolithically fabricated on the electrically insulating layer from semiconductor material having a second bandgap larger than the first bandgap, and having second electrical contacts for extraction of current from the upper cell. The photovoltaic system also includes one or more first photon sources operable to supply photons to the photovoltaic device, the photons having wavelengths in a first wavelength range associated primarily with the first bandgap. The photovoltaic system further includes one or more second photon sources operable to supply photons to the photovoltaic device, the photons having wavelengths in a second wavelength range primarily associated with the second bandgap.

摘要翻译： 光伏系统包括光伏器件，其包括由具有第一带隙的半导体材料制成的下部光伏电池，并且具有用于从下部电池提取电流的第一电触点; 整体地制造在下部光伏电池上的电绝缘层; 以及在具有大于第一带隙的第二带隙的半导体材料的电绝缘层上单片地制造的上部光伏电池，并且具有用于从上部电池提取电流的第二电触点。 光伏系统还包括可操作以向光伏器件提供光子的一个或多个第一光子源，所述光子具有主要与第一带隙相关联的第一波长范围的波长。 光伏系统还包括一个或多个可操作以向光伏器件提供光子的第二光子源，所述光子具有主要与第二带隙相关联的第二波长范围的波长。