公开(公告)号：US12119416B2

公开(公告)日：2024-10-15

申请号：US17287988

申请日：2019-10-23

Applicant: First Solar, Inc.

Inventor： Le Chen ,  Sachit Grover ,  Jason Kephart ,  Sergei Kniajanski ,  Chungho Lee ,  Xiaoping Li ,  Feng Liao ,  Dingyuan Lu ,  Rajni Mallick ,  Wenming Wang ,  Gang Xiong ,  Wei Zhang

IPC: H01L31/0216 ,  H01L31/0296 ,  H01L31/073

CPC classification number: H01L31/02167 ,  H01L31/02963 ,  H01L31/073

Abstract: According to the embodiments provided herein, a photovoltaic device can include a buffer layer adjacent to an absorber layer doped p-type with a group V dopant. The buffer layer can have a plurality of layers compatible with group V dopants.

公开(公告)号：US20240063316A1

公开(公告)日：2024-02-22

申请号：US18380519

申请日：2023-10-16

Applicant: First Solar, Inc.

Inventor： Sachit Grover ,  Stuart Irvine ,  Xiaoping Li ,  Roger Malik ,  Shahram Seyedmohammadi ,  Gang Xiong ,  Wei Zhang

IPC: H01L31/0296 ,  H01L31/18

CPC classification number: H01L31/02963 ,  H01L31/1828 ,  H01L31/1864

Abstract: Provided are structures and methods for doping polycrystalline thin film semiconductor materials in photovoltaic devices. Embodiments include methods for forming and treating a photovoltaic semiconductor absorber layer.

公开(公告)号：US20220285569A1

公开(公告)日：2022-09-08

申请号：US17751189

申请日：2022-05-23

Applicant: First Solar, Inc.

Inventor： Sachit Grover ,  Chungho Lee ,  Xiaoping Li ,  Dingyuan Lu ,  Roger Malik ,  Gang Xiong

IPC: H01L31/0296 ,  H01L31/0304 ,  H01L31/05 ,  H01L31/18

Abstract: According to the embodiments provided herein, a method for forming a photovoltaic device can include depositing a plurality of semiconductor layers. The plurality of semiconductor layers can include a doped layer that is doped with a group V dopant. The doped layer can include cadmium selenide or cadmium telluride. The method can include annealing the plurality of semiconductor layers to form an absorber layer.

公开(公告)号：US20210143288A1

公开(公告)日：2021-05-13

申请号：US16488275

申请日：2018-02-22

Applicant: First Solar, Inc.

Inventor： Sachit Grover ,  Stuart Irvine ,  Xiaoping Li ,  Roger Malik ,  Shahram Seyedmohammadi ,  Gang Xiong ,  Wei Zhang

IPC: H01L31/0296 ,  H01L31/18

Abstract: Provided are structures and methods for doping polycrystalline thin film semiconductor materials in photovoltaic devices. Embodiments include methods for forming and treating a photovoltaic semiconductor absorber layer.

公开(公告)号：US20210036178A1

公开(公告)日：2021-02-04

申请号：US16966424

申请日：2019-01-14

Applicant: First Solar, Inc.

Inventor： Sachit Grover ,  Dingyuan Lu ,  Roger Malik ,  Gang Xiong

IPC: H01L31/18 ,  H01L31/0296 ,  H01L31/073

Abstract: According to the embodiments provided herein, a method for doping an absorber layer can include contacting the absorber layer with an annealing compound. The annealing compound can include cadmium chloride and a group V salt comprising an anion and a cation. The anion, the cation, or both can include a group V element. The method can include annealing the absorber layer, whereby the absorber layer is doped with at least a portion of the group V element of the annealing compound.

公开(公告)号：US20200381567A1

公开(公告)日：2020-12-03

申请号：US16770388

申请日：2017-12-07

Applicant: First Solar, Inc.

Inventor： Hongbo Cao ,  Sachit Grover ,  William Hullinger Huber ,  Xiaoping Li ,  Dingyuan Lu ,  Roger Malik ,  Hongying Peng ,  Joseph John Shiang ,  Qianqian Xin ,  Gang Xiong

IPC: H01L31/0296 ,  H01L31/073 ,  H01L31/18

Abstract: A photovoltaic device (100) can include an absorber layer (160). The absorber layer (160) can be doped p-type with a Group V dopant and can have a carrier concentration of the Group V dopant greater than 4×1015cm-3. The absorber layer (160) can include oxygen in a central region of the absorber layer (160). The absorber layer (160) can include an alkali metal in the central region of the absorber layer (160). Methods for carrier activation can include exposing an absorber layer (160) to an annealing compound in a reducing environment (220). The annealing compound (224) can include cadmium chloride and an alkali metal chloride.

公开(公告)号：US20150380572A1

公开(公告)日：2015-12-31

申请号：US14845334

申请日：2015-09-04

Applicant: First Solar, Inc.

Inventor： Scott Christensen ,  Rick C. Powell ,  Gang Xiong

IPC: H01L31/0296 ,  H01L31/056 ,  H01L31/0224

CPC classification number: H01L31/0296 ,  H01L31/022441 ,  H01L31/056 ,  H01L31/073 ,  H01L31/1828 ,  H01L31/1864 ,  H01L31/1872 ,  Y02E10/52 ,  Y02E10/543 ,  Y02P70/521

Abstract: A method of manufacturing a photovoltaic device including depositing a cadmium telluride layer onto a substrate; treating the cadmium telluride layer with a compound comprising chlorine and an element from Groups 1-11, zinc, mercury, or copernicium or a combination thereof; and annealing the cadmium telluride layer. A chloride-treated photovoltaic device.

Abstract translation: 一种制造光伏器件的方法，包括将碲化镉层沉积到衬底上; 用包含氯和1-11，锌，汞或哥打尼碱或其组合的元素的化合物处理碲化镉层; 并对碲化镉层进行退火。 氯化物处理的光伏器件。

公开(公告)号：US20150004743A1

公开(公告)日：2015-01-01

申请号：US14317479

申请日：2014-06-27

Applicant: First Solar, Inc.

Inventor： Pratima Addepalli ,  Benyamin Buller ,  Markus Gloeckler ,  Akhlesh Gupta ,  David Hwang ,  Andrei Los ,  Rick Powell ,  Rui Shao ,  Gang Xiong ,  Ming Lun Yu ,  San Yu ,  Zhibo Zhao

IPC: H01L31/18 ,  H01L31/032

CPC classification number: H01L31/073 ,  H01L31/1828 ,  H01L31/1864 ,  Y02E10/543 ,  Y02P70/521

Abstract: A method to improve operation of a CdTe-based photovoltaic device is disclosed, the method comprising the steps of depositing a semiconductor absorber layer adjacent to a substrate, depositing a semiconductor buffer layer adjacent to the semiconductor layer, and annealing at least one of the semiconductor absorber layer and the semiconductor buffer layer with one of a laser and a flash lamp.

Abstract translation: 公开了一种改善CdTe基光伏器件的操作的方法，该方法包括以下步骤：将与半导体层相邻的半导体缓冲层沉积在半导体吸收层附近，沉积半导体缓冲层，并退火半导体 吸收层和具有激光和闪光灯之一的半导体缓冲层。

公开(公告)号：US20150000733A1

公开(公告)日：2015-01-01

申请号：US14317433

申请日：2014-06-27

Applicant: First Solar, Inc.

Inventor： Benyamin Buller ,  Markus Gloeckler ,  Akhlesh Gupta ,  Rick Powell ,  Rui Shao ,  Gang Xiong ,  Ming Lun Yu ,  Zhibo Zhao

IPC: H01L31/0224 ,  H01L31/18

CPC classification number: H01L31/022425 ,  H01L31/073 ,  H01L31/0749 ,  Y02E10/541 ,  Y02E10/543 ,  Y02P70/521

Abstract: Methods and devices are described for a photovoltaic device. The photovoltaic device includes a glass substrate, a semiconductor absorber layer formed over the glass substrate, a metal back contact layer formed over the semiconductor absorber layer, and a p-type back contact buffer layer formed from one of MnTe, Cd1-xMnxTe, and SnTe, the buffer layer disposed between the semiconductor absorber layer and the metal back contact layer.

Abstract translation: 对于光伏器件描述了方法和装置。 光电器件包括玻璃衬底，形成在玻璃衬底上的半导体吸收层，形成在半导体吸收层上的金属背接触层，以及由MnTe，Cd1-xMnxTe和 SnTe，设置在半导体吸收层和金属背接触层之间的缓冲层。

公开(公告)号：US20140261667A1

公开(公告)日：2014-09-18

申请号：US14209924

申请日：2014-03-13

Applicant: FIRST SOLAR, INC.

Inventor： Benyamin Buller ,  Igor Sankin ,  Long Cheng ,  Jigish Trivedi ,  Jianjun Wang ,  Kieran Tracy ,  Scott Christensen ,  Gang Xiong ,  Markus Gloeckler ,  San Yu

IPC: H01L31/0224 ,  H01L31/18

CPC classification number: H01L31/1828 ,  H01L31/022425 ,  H01L31/02966 ,  H01L31/046 ,  H01L31/073 ,  H01L31/1832 ,  Y02E10/543

Abstract: A back electrode for a PV device and method of formation are disclosed. A ZnTe material is provided over an absorber material and a MoNx material is provided over the ZnTe material. A Mo material may also be included in the back electrode above or below the MoNx layer and a metal layer may be also provided over the MoNx layer.

Abstract translation: 公开了一种用于PV器件的背面电极和形成方法。 在吸收材料上提供ZnTe材料，并且在ZnTe材料上提供MoNx材料。 在MoNx层上方或下方的背电极中也可以包含Mo材料，也可以在MoNx层上设置金属层。