公开(公告)号：US20100047959A1

公开(公告)日：2010-02-25

申请号：US12607554

申请日：2009-10-28

Applicant: Arthur Cornfeld ,  Daniel McGlynn ,  Tansen Varghese

Inventor： Arthur Cornfeld ,  Daniel McGlynn ,  Tansen Varghese

IPC: H01L31/18 ,  H01L21/20

CPC classification number: H01L31/0735 ,  H01L21/7813 ,  H01L31/0547 ,  H01L31/06875 ,  H01L51/0016 ,  Y02E10/52 ,  Y02E10/544

Abstract: A process for selectively freeing an epitaxial layer from a single crystal substrate upon which it was grown, by providing a first substrate; depositing a separation layer on the first substrate; depositing on the separation layer a sequence of layers of semiconductor material forming a solar cell; mounting and bonding a thin flexible support having a coefficient of thermal expansion substantially greater than that of the adjacent semiconductor material on top of the sequence of layers at an elevated temperature; and etching the separation layer while the temperature of the support and layers of semiconductor material decrease, so that the support and the attached layer curls away from the first substrate in view of their differences in coefficient of thermal expansion, so as to remove the epitaxial layer from the substrate.

Abstract translation: 一种通过提供第一衬底从其生长的单晶衬底选择性地释放外延层的工艺; 在第一衬底上沉积分离层; 在分离层上沉积形成太阳能电池的半导体材料层序列; 在升高的温度下，在所述层序列的顶部上安装和粘结具有基本上大于邻近的半导体材料的热膨胀系数的薄的柔性支撑件; 并且在支撑体和半导体材料层的温度降低的同时蚀刻分离层，从而考虑到它们的热膨胀系数的差异，支撑体和附着层从第一基板卷曲，从而去除外延层 从底物。

公开(公告)号：US20100012175A1

公开(公告)日：2010-01-21

申请号：US12218582

申请日：2008-07-16

Applicant: Tansen Varghese ,  Arthur Cornfeld

Inventor： Tansen Varghese ,  Arthur Cornfeld

IPC: H01L31/042 ,  H01L31/18

CPC classification number: H01L31/1844 ,  H01L31/02008 ,  H01L31/022425 ,  H01L31/06875 ,  H01L31/0725 ,  H01L31/0735 ,  H01L31/078 ,  Y02E10/544

Abstract: A method of forming a multifunction solar cell including an upper subcell, a middle subcell, and a lower subcell by providing a substrate for the epitaxial growth of semiconductor material; forming a first solar subcell on the substrate having a first band gap; forming a second solar subcell over the first solar subcell having a second band gap smaller than the first band gap; forming a graded interlayer over the second subcell, the graded interlayer having a third band gap greater than the second band gap; forming a third solar subcell over the graded interlayer having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell; and forming a contact composed of a sequence of layers over the first subcell at a temperature of 280° C. or less and having a contact resistance of less than 5×10−4 ohms-cm2.

Abstract translation: 一种通过提供用于半导体材料的外延生长的衬底来形成包括上部子电池，中间子电池和下部子电池的多功能太阳能电池的方法; 在具有第一带隙的基板上形成第一太阳能子电池; 在所述第一太阳能子电池上形成具有小于所述第一带隙的第二带隙的第二太阳能子电池; 在所述第二子电池上形成渐变中间层，所述渐变中间层具有大于所述第二带隙的第三带隙; 在所述渐变中间层上形成具有小于所述第二带隙的第四带隙的第三太阳能子电池，使得所述第三子电池相对于所述第二子电池晶格失配; 以及在280℃或更低的温度下形成由第一子电池上的一系列层组成的接触，并具有小于5×10 -4欧姆 - 厘米2的接触电阻。

公开(公告)号：US20090272430A1

公开(公告)日：2009-11-05

申请号：US12258190

申请日：2008-10-24

Applicant: Arthur Cornfeld ,  Mark A. Stan ,  Tansen Varghese ,  Benjamin Cho

Inventor： Arthur Cornfeld ,  Mark A. Stan ,  Tansen Varghese ,  Benjamin Cho

IPC: H01L31/04 ,  H01L31/18

CPC classification number: H01L31/06875 ,  H01L31/02168 ,  H01L31/0725 ,  H01L31/078 ,  Y02E10/544 ,  Y02P70/521

Abstract: A multijunction solar cell including an upper first solar subcell having a first band gap; a middle second solar subcell adjacent to the first solar subcell and having a second band gap smaller than the first band gap and having a base layer and an adjacent emitter layer, wherein the other layer adjacent to the emitter layer has an index of refraction substantially equal to that of the emitter layer; a graded interlayer adjacent to the second solar having a third band gap greater than said second band gap; and a lower solar subcell adjacent to the interlayer, and having a fourth band gap smaller than the second band gap, the third subcell being lattice mismatched with respect to the second subcell.

Abstract translation: 一种多结太阳能电池，包括具有第一带隙的上部第一太阳能子电池; 与第一太阳能子电池相邻并具有小于第一带隙的第二带隙并具有基极层和相邻发射极层的中间第二太阳能子电池，其中与发射极层相邻的另一层具有基本相等的折射率 到发射极层的; 与第二太阳能相邻的渐变中间层具有大于所述第二带隙的第三带隙; 以及与所述中间层相邻的下部太阳能子电池，并且具有小于所述第二带隙的第四带隙，所述第三子电池相对于所述第二子电池晶格失配。

公开(公告)号：US20130034931A1

公开(公告)日：2013-02-07

申请号：US13603088

申请日：2012-09-04

Applicant: Tansen Varghese ,  Arthur Cornfeld

Inventor： Tansen Varghese ,  Arthur Cornfeld

IPC: H01L31/18

CPC classification number: H01L31/1844 ,  H01L31/02008 ,  H01L31/022425 ,  H01L31/06875 ,  H01L31/0725 ,  H01L31/0735 ,  H01L31/078 ,  Y02E10/544

Abstract: A method of forming a solar cell including: providing a semiconductor body including at least one photoactive junction; forming a semiconductor contact layer composed of GaAs deposited over the semiconductor body; and depositing a metal contact layer including a germanium layer and a palladium layer over the semiconductor contact layer so that the specific contact resistance is less than 5×10−4 ohms-cm2.

Abstract translation: 一种形成太阳能电池的方法，包括：提供包括至少一个光活性连接的半导体本体; 形成沉积在所述半导体本体上的由GaAs构成的半导体接触层; 以及在所述半导体接触层上沉积包括锗层和钯层的金属接触层，使得所述特定接触电阻小于5×10 -4欧姆 - 厘米2。

公开(公告)号：US20120276676A1

公开(公告)日：2012-11-01

申请号：US13465477

申请日：2012-05-07

Applicant: Arthur Cornfeld ,  Daniel McGlynn ,  Tansen Varghese

Inventor： Arthur Cornfeld ,  Daniel McGlynn ,  Tansen Varghese

IPC: H01L31/18

CPC classification number: H01L31/1844 ,  H01L31/06875 ,  H01L31/0725 ,  H01L31/0735 ,  Y02E10/544 ,  Y02P70/521

Abstract: The present disclosure provides a process for manufacturing a solar cell by selectively freeing an epitaxial layer from a single crystal substrate upon which it was grown. In some embodiments the process includes, among other things, providing a first substrate; depositing a separation layer on said first substrate; depositing on said separation layer a sequence of layers of semiconductor material forming a solar cell; mounting and bonding a flexible support on top of the sequence of layers; etching said separation layer while applying an agitating action to the etchant solution so as to remove said flexible support with said epitaxial layer from said first substrate.

Abstract translation: 本公开提供了一种通过从其生长的单晶衬底选择性地释放外延层来制造太阳能电池的方法。 在一些实施例中，该方法尤其包括提供第一基底; 在所述第一衬底上沉积分离层; 在所述分离层上沉积形成太阳能电池的半导体材料层序列; 将柔性支撑件安装并粘合在层序列之上; 蚀刻所述分离层，同时向蚀刻剂溶液施加搅拌作用，以便从所述第一基底上除去所述外延层的所述柔性载体。

公开(公告)号：US20100248411A1

公开(公告)日：2010-09-30

申请号：US12816205

申请日：2010-06-15

Applicant: Arthur Cornfeld ,  Tansen Varghese ,  Jacqueline Diaz

Inventor： Arthur Cornfeld ,  Tansen Varghese ,  Jacqueline Diaz

IPC: H01L31/18

CPC classification number: H01L31/0735 ,  H01L31/06875 ,  H01L31/0725 ,  H01L31/078 ,  H01L31/18 ,  H01L31/1892 ,  Y02E10/544

Abstract: A method of forming a multijunction solar cell including an upper subcell, a middle subcell, and a lower subcell by providing a first substrate for the epitaxial growth of semiconductor material; forming a first solar subcell on the substrate having a first band gap; forming a second solar subcell over the first solar subcell having a second band gap smaller than the first band gap; forming a graded interlayer over the second subcell; forming a third solar subcell over the graded interlayer having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell; attaching a surrogate second substrate over the third solar subcell and removing the first substrate; and etching a first trough around the periphery of the solar cell to the surrogate second substrate so as to form a mesa structure on the surrogate second substrate and facilitate the removal of the solar cell from the surrogate second substrate.

Abstract translation: 一种通过提供用于半导体材料的外延生长的第一衬底来形成包括上部子电池，中间子电池和下部子电池的多结太阳能电池的方法; 在具有第一带隙的基板上形成第一太阳能子电池; 在所述第一太阳能子电池上形成具有小于所述第一带隙的第二带隙的第二太阳能子电池; 在所述第二子电池上形成分级中间层; 在所述渐变中间层上形成具有小于所述第二带隙的第四带隙的第三太阳能子电池，使得所述第三子电池相对于所述第二子电池晶格失配; 在所述第三太阳能子电池上附接替代的第二衬底并移除所述第一衬底; 以及将围绕所述太阳能电池的周边的第一槽蚀刻到所述代理第二基板，以便在所述替代第二基板上形成台面结构，并且便于从所述替代第二基板移除所述太阳能电池。

公开(公告)号：US07741146B2

公开(公告)日：2010-06-22

申请号：US12190449

申请日：2008-08-12

Applicant: Arthur Cornfeld ,  Tansen Varghese ,  Jacqueline Diaz

Inventor： Arthur Cornfeld ,  Tansen Varghese ,  Jacqueline Diaz

IPC: H01L21/00

CPC classification number: H01L31/0735 ,  H01L31/06875 ,  H01L31/0725 ,  H01L31/078 ,  H01L31/18 ,  H01L31/1892 ,  Y02E10/544

Abstract: A method of forming a multifunction solar cell including an upper subcell, a middle subcell, and a lower subcell by providing a first substrate for the epitaxial growth of semiconductor material; forming a first solar subcell on the substrate having a first band gap; forming a second solar subcell over the first solar subcell having a second band gap smaller than the first band gap; forming a graded interlayer over the second subcell, the graded interlayer having a third band gap greater than the second band gap; forming a third solar subcell over the graded interlayer having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell; attaching a surrogate second substrate over the third solar subcell and removing the first substrate; and etching a first trough around the periphery of the solar cell to the surrogate second substrate so as to form a mesa structure on the surrogate second substrate and facilitate the removal of said solar cell from the surrogate second substrate.

Abstract translation: 一种通过提供用于半导体材料的外延生长的第一衬底来形成包括上部子电池，中间子电池和下部子电池的多结太阳能电池的方法; 在具有第一带隙的基板上形成第一太阳能子电池; 在所述第一太阳能子电池上形成具有小于所述第一带隙的第二带隙的第二太阳能子电池; 在所述第二子电池上形成渐变中间层，所述渐变中间层具有大于所述第二带隙的第三带隙; 在所述渐变中间层上形成具有小于所述第二带隙的第四带隙的第三太阳能子电池，使得所述第三子电池相对于所述第二子电池晶格失配; 在所述第三太阳能子电池上附接替代的第二衬底并移除所述第一衬底; 以及将围绕所述太阳能电池的周边的第一槽蚀刻到所述代理第二基板，以便在所述替代第二基板上形成台面结构，并且有助于从所述代理第二基板去除所述太阳能电池。

公开(公告)号：US20100151618A1

公开(公告)日：2010-06-17

申请号：US12337014

申请日：2008-12-17

Applicant: Paul R. Sharps ,  Arthur Cornfeld ,  Tansen Varghese ,  Fred Newman ,  Jacqueline Diaz

Inventor： Paul R. Sharps ,  Arthur Cornfeld ,  Tansen Varghese ,  Fred Newman ,  Jacqueline Diaz

IPC: H01L21/18 ,  H01L21/20

CPC classification number: H01L29/045 ,  H01L31/0392 ,  H01L31/06875 ,  H01L31/0735 ,  H01L31/078 ,  H01L31/1844 ,  H01L31/1852 ,  H01L31/1892 ,  Y02E10/544 ,  Y02P70/521 ,  Y10S438/977

Abstract: A method of manufacturing a solar cell by providing a gallium arsenide carrier with a prepared bonding surface; providing a sapphire substrate; bonding the gallium arsenide carrier and the sapphire substrate to produce a composite structure; detaching the bulk of the gallium arsenide carrier from the composite structure, leaving a gallium arsenide growth substrate on the sapphire substrate; and depositing a sequence of layers of semiconductor material forming a solar cell on the growth substrate. For some solar cells, the method further includes mounting a surrogate second substrate on top of the sequence of layers of semiconductor material forming a solar cell; and removing the growth substrate.

Abstract translation: 一种制造太阳能电池的方法，其通过提供具有制备的接合表面的砷化镓载体; 提供蓝宝石衬底; 键合砷化镓载体和蓝宝石衬底以产生复合结构; 从复合结构中分离大部分砷化镓载体，在蓝宝石衬底上留下砷化镓生长衬底; 以及在生长衬底上沉积形成太阳能电池的半导体材料层序列。 对于一些太阳能电池，该方法还包括将替代第二衬底安装在形成太阳能电池的半导体材料层序列之上; 并除去生长底物。

公开(公告)号：US20090078309A1

公开(公告)日：2009-03-26

申请号：US11860183

申请日：2007-09-24

Applicant: Arthur Cornfeld ,  Mark A. Stan ,  Tansen Varghese ,  Fred Newman

Inventor： Arthur Cornfeld ,  Mark A. Stan ,  Tansen Varghese ,  Fred Newman

IPC: H01L31/06 ,  H01L31/0248

CPC classification number: H01L31/1852 ,  H01L31/022425 ,  H01L31/06875 ,  H01L31/0693 ,  H01L31/1844 ,  Y02E10/544

Abstract: A method of forming a multijunction solar cell including an upper subcell, a middle subcell, and a lower subcell, the method including: providing first substrate for the epitaxial growth of semiconductor material; forming a first solar subcell on the substrate having a first band gap; forming a second solar subcell over the first solar subcell having a second band gap smaller than the first band gap; forming a barrier layer over the second subcell to reduce threading dislocations; forming a grading interlayer over the barrier layer, the grading interlayer having a third band gap greater than the second band gap; and forming a third solar subcell over the grading interlayer having a fourth band gap smaller than the second band gap such that the third subcell is lattice mismatched with respect to the second subcell.

Abstract translation: 一种形成包括上部子电池，中间子电池和下部子电池的多结太阳能电池的方法，所述方法包括：提供用于半导体材料的外延生长的第一衬底; 在具有第一带隙的基板上形成第一太阳能子电池; 在所述第一太阳能子电池上形成具有小于所述第一带隙的第二带隙的第二太阳能子电池; 在所述第二子电池上形成阻挡层以减少穿透位错; 在所述阻挡层上形成分级中间层，所述分级中间层具有大于所述第二带隙的第三带隙; 以及在具有小于第二带隙的第四带隙的分级中间层上形成第三太阳能子电池，使得第三子电池相对于第二子电池晶格失配。

公开(公告)号：US20090078308A1

公开(公告)日：2009-03-26

申请号：US11860142

申请日：2007-09-24

Applicant: Tansen Varghese ,  Arthur Cornfeld ,  Jacqueline Diaz

Inventor： Tansen Varghese ,  Arthur Cornfeld ,  Jacqueline Diaz

IPC: H01L31/06

CPC classification number: H01L31/06875 ,  H01L31/18 ,  Y02E10/544 ,  Y02P70/521

Abstract: A multijunction solar cell including a first solar subcell having a first band gap; a second solar subcell disposed over the first subcell and having a second band gap smaller than the first band gap; a grading interlayer disposed over the second subcell and having a third band gap greater than the second band gap; a third solar subcell disposed over the interlayer that is lattice mismatched with respect to the middle subcell and having a fourth band gap smaller than the second band gap; and either a thin (approximately 2-6 mil) substrate and/or a rigid coverglass supporting the first, second, and third solar subcells.

Abstract translation: 一种多结太阳能电池，包括具有第一带隙的第一太阳能子电池; 第二太阳能子电池，设置在所述第一子电池上，并具有小于所述第一带隙的第二带隙; 分级夹层，设置在所述第二子电池上方，并具有大于所述第二带隙的第三带隙; 设置在所述中间层上的第三太阳能子电池，所述第三太阳能子电池相对于所述中间子电池晶格失配并且具有小于所述第二带隙的第四带隙; 以及支撑第一，第二和第三太阳能子电池的薄（约2-6密耳）衬底和/或刚性覆盖玻璃。