公开(公告)号：US20190319141A1

公开(公告)日：2019-10-17

申请号：US16023859

申请日：2018-06-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byoung Koun MIN ,  Gi Soon PARK ,  Hyung Suk OH ,  Yun Jeong HWANG

IPC: H01L31/032 ,  H01L31/0392 ,  C23C16/02 ,  C23C16/30

Abstract: Methods of manufacturing a CIGS thin film for a solar cell are provided. According to the method, a CIGS thin film having an ideal double band gap grade structure with a large particle size may be obtained by heat-treating a solution-treated CIG oxide thin film by a three-step chalcogenization process. Accordingly, performance of the solar cell may be improved.

公开(公告)号：US20210328229A1

公开(公告)日：2021-10-21

申请号：US17197893

申请日：2021-03-10

Applicant: Korea Institute of Science and Technology

Inventor： Hyung Suk OH ,  Woong Hee LEE ,  Byoung Koun MIN ,  Yun Jeong HWANG ,  Ung LEE ,  Dong Ki LEE ,  Da Hye WON ,  Jai Hyun KOH

IPC: H01M4/90 ,  C25B11/089 ,  B22F1/00

Abstract: Proposed is an iridium alloy catalyst having reversible catalytic activity for an oxygen evolution reaction (OER), a hydrogen evolution reaction (HER), and a hydrogen oxidation reaction (HOR) by including an iridium alloy including iridium (Ir) and nickel (Ni). The iridium alloy catalyst according to the present disclosure is rapidly converted to an iridium alloy catalyst in an oxide form and an iridium alloy catalyst in a metallic form according to applied voltage by controlling its crystallinity. Thus, even in case an oxide layer is formed after the OER, the oxidation layer disappears during the HER and HOR and the properties of an iridium metal catalyst remain, thereby maintaining HER/HOR performance.

公开(公告)号：US20210254225A1

公开(公告)日：2021-08-19

申请号：US16804001

申请日：2020-02-28

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Dong Ki LEE ,  Byoung Koun MIN ,  Byungwoo KIM ,  Yun Jeong HWANG ,  Hyung-Suk OH ,  Ung LEE ,  Jai Hyun KOH

IPC: C25B1/00 ,  C25B9/04 ,  C25B11/04 ,  H01M14/00

Abstract: Provided are a photoelectrode for hydrogen generation in solar water splitting and a manufacturing method thereof. The photoelectrode for hydrogen generation in solar water splitting, includes a light absorbing layer including a chalcopyrite compound; and a hydrogen generation catalyst including CuxS (where 0≤x≤2) which is present on the light absorbing layer, and may be manufactured by using a solution process which enables mass production and produce hydrogen from water using sunlight with high efficiency without using a noble metal element.

公开(公告)号：US20140109967A1

公开(公告)日：2014-04-24

申请号：US14058991

申请日：2013-10-21

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byoung Koun MIN ,  Yun Jeong HWANG ,  Sung-Hwan MOON ,  Se Jin PARK

IPC: H01L31/18 ,  H01L31/048

CPC classification number: H01L31/048 ,  H01L31/0322 ,  H01L31/03923 ,  H01L31/0684 ,  H01L31/0749 ,  H02S20/26 ,  Y02A30/62 ,  Y02E10/541 ,  Y02E10/547 ,  Y02P70/521

Abstract: Disclosed is a bifacial thin film solar cell that is applicable to a BIPV window, particularly a bifacial CIGS thin film solar cell that can generate electricity by both sunlight and indoor illumination due to its ability to absorb light at both front and rear sides. According to several embodiments, visible light in a particular wavelength region can be transmitted through the semi-transparent thin film solar cell. In addition, high stability and safety of the thin film solar cell can be ensured because there is no need to use organic materials and liquid electrolytes. Furthermore, the fabrication cost of the thin film solar cell can be reduced by a low cost solution process. The thin film solar cell exhibits various other effects described in the specification.

Abstract translation: 公开了一种适用于BIPV窗口的双面薄膜太阳能电池，特别是由于能够吸收前后两侧的光而能够通过阳光和室内照明而发电的双面CIGS薄膜太阳能电池。 根据几个实施例，特定波长区域中的可见光可以透过半透明薄膜太阳能电池。 此外，可以确保薄膜太阳能电池的高稳定性和安全性，因为不需要使用有机材料和液体电解质。 此外，可以通过低成本的解决方案来降低薄膜太阳能电池的制造成本。 薄膜太阳能电池具有说明书中描述的各种其他效果。

公开(公告)号：US20140070347A1

公开(公告)日：2014-03-13

申请号：US13687122

申请日：2012-11-28

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byoung Koun MIN ,  Hee Sang AN ,  Yun Jeong HWANG

IPC: H01L31/032 ,  H01L31/18

CPC classification number: H01L31/0322 ,  H01L31/18 ,  Y02E10/541

Abstract: Disclosed are methods for producing chalcopyrite compound (e.g., copper indium selenide (CIS), copper indium gallium selenide (CIGS), copper indium sulfide (CIS) or copper indium gallium sulfide (CIGS)) thin films. The methods are based on solution processes, such as printing, particularly, multi-stage coating of pastes or inks of precursors having different physical properties. Chalcopyrite compound thin films produced by the methods can be used as light-absorbing layers for thin-film solar cells. The use of the chalcopyrite compound thin films enables the fabrication of thin-film solar cells with improved efficiency at low costs.

Abstract translation: 公开了生产黄铜矿化合物（例如，硒化铜铟锡（CIS），铜铟镓硒（CIGS），硫化铜（CIS）或铜铟镓硫化物（CIGS））薄膜的方法。 该方法基于溶液方法，例如印刷，特别是糊状物的多阶段涂布或具有不同物理性质的前体油墨。 通过该方法生产的黄铜矿复合薄膜可用作薄膜太阳能电池的光吸收层。 使用黄铜矿化合物薄膜能够以低成本制造提高效率的薄膜太阳能电池。

公开(公告)号：US20210292917A1

公开(公告)日：2021-09-23

申请号：US17017845

申请日：2020-09-11

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ung LEE ,  Byoung Koun MIN ,  Hyun Joo LEE ,  Yun Jeong HWANG ,  Hyung Suk OH ,  Dong Ki LEE ,  Da Hye WON ,  Jai Hyun KOH ,  Dong Gu HAN

IPC: C25B1/00 ,  C25B1/10 ,  C25B9/08 ,  C25B9/18 ,  C25B15/08 ,  B01D53/26 ,  H02S10/40 ,  H02S30/10 ,  H02S40/30

Abstract: Disclosed is a hydrogen production and storage system using solar energy which converts solar energy into electric energy through a solar panel, operates a water electrolysis reactor using the electric energy to produce hydrogen, and stores the hydrogen at a high pressure in a hydrogen storage tank through a water tank, a pressure control valve, etc.

公开(公告)号：US20200343393A1

公开(公告)日：2020-10-29

申请号：US16397334

申请日：2019-04-29

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byoung Koun MIN ,  Yun Jeong HWANG ,  Hyung-Suk OH ,  Ung LEE ,  Dahye WON ,  Dong Ki LEE ,  Joo-Hyun KIM ,  Min Kyu KIM

IPC: H01L31/0392 ,  H01L31/046

Abstract: A chalcopyrite compound-based thin film in which an alkali metal is incorporated, and a method of fabricating the same are provided. The chalcopyrite compound-based thin film in which an alkali metal is incorporated may have improved film characteristics such as excellent chalcopyrite crystal characteristics and improved surface characteristics, and may exhibit improved optical characteristics by control of the distribution of constituent elements in the chalcopyrite compound layer. Accordingly, performance of a solar cell including the chalcopyrite compound-based thin film may be improved. The chalcopyrite compound-based thin film may be easily fabricated through a solution process.

公开(公告)号：US20160315216A1

公开(公告)日：2016-10-27

申请号：US14952115

申请日：2015-11-25

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Byoung Koun MIN ,  Yun Jeong HWANG ,  Se Jin PARK

IPC: H01L31/20 ,  H01L31/065 ,  H01L31/032

CPC classification number: H01L31/208 ,  H01L21/02425 ,  H01L21/02568 ,  H01L21/02614 ,  H01L21/02628 ,  H01L31/0322 ,  H01L31/0323 ,  H01L31/03923 ,  H01L31/065 ,  H01L31/18 ,  H01L31/1864

Abstract: Provided is a CIGSSe thin film for a solar cell, a method for preparing the same, and a solar cell using the same. More particularly, the CIGSSe thin film for a solar cell shows a decrease in peak intensity of sulfur from the surface of the thin film to the local minimum value point of sulfur content in the depth direction, after the analysis based on the Auger electron spectroscopy, and thus controls the band-gap in the thin film. Therefore, the solar cell including the CIGSSe thin film shows an excellent effect in improving photoelectric conversion efficiency.

Abstract translation: 提供了一种用于太阳能电池的CIGSSe薄膜，其制备方法和使用其的太阳能电池。 更具体地说，用于太阳能电池的CIGSSe薄膜在基于俄歇电子能谱分析之后，表现出从薄膜表面到硫的深度方向的局部最小值点硫的峰值强度的降低， 从而控制薄膜中的带隙。 因此，包含CIGSSe薄膜的太阳能电池在提高光电转换效率方面表现出极好的效果。