公开(公告)号：US20230103150A1

公开(公告)日：2023-03-30

申请号：US17056412

申请日：2020-05-28

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Gumin KANG ,  Hyungduk KO ,  Ho Seong JANG ,  Cho-long JUNG

IPC: H02S40/22

Abstract: The present disclosure relates to a transparent luminescent solar concentrator (LSC). The LSC according to an embodiment of the present disclosure includes a polymer resin panel uniformly doped with phosphors. Accordingly, it is possible to greatly improve the transmittance and optical haze compared to the existing LSC manufactured by physically mixing or coating phosphors on the front side of the panel. In addition, it is possible to greatly improve the light collection efficiency of the LSC through the arrangement structure of the solar cells embedded in the polymer resin panel. The polymer resin panel according to an embodiment may be manufactured with flexibility or rigidity according to the purpose of use, and thus can be widely applied to curved structures, for example, building windows, automobile glasses and greenhouse roofs.

公开(公告)号：US20210332293A1

公开(公告)日：2021-10-28

申请号：US17121766

申请日：2020-12-15

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ho Seong JANG ,  Hyungduk KO ,  Gumin KANG ,  So Hye CHO ,  Seung Yong LEE ,  A Ra HONG

IPC: C09K11/77 ,  H01L31/055 ,  F24S23/00 ,  H01L31/0445

Abstract: The present disclosure relates to down-shifting nanophosphors, a method for preparing the same, and a luminescent solar concentrator (LSC) using the same. The down-shifting nanophosphors according to an embodiment of the present disclosure include a core including NaYF4 nanocrystals doped with neodymium (Nd) and ytterbium (Yb), and further include a neodymium (Nd)-doped crystalline shell surrounding the core, or further include a NaYF4 crystalline shell surrounding the crystalline shell. Therefore, the down-shifting nanophosphors efficiently absorb near infrared rays with a wavelength range of 700-900 nm and efficiently emit near infrared rays with a wavelength range of 950-1050 nm. In addition, the down-shifting nanophosphors according to an embodiment of the present disclosure has a size of 60 nm or less, and thus can be applied to manufacture transparent LSC films with ease and can realize transparent solar cell modules having high near infrared ray shifting efficiency.

公开(公告)号：US20190333779A1

公开(公告)日：2019-10-31

申请号：US16270594

申请日：2019-02-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Gumin KANG ,  Il Ki HAN ,  S. Joon KWON ,  Young-Hwan KIM ,  Hyungduk KO ,  Chun Keun KIM

IPC: H01L21/321 ,  H01L21/66 ,  H01L21/306 ,  H01L21/3105

Abstract: A method for surface planarization of an object using a light source of a specific wavelength according to an embodiment includes: providing an object in a main chamber; injecting an etching gas into the main chamber; inputting the light source of a specific wavelength onto a surface of the object; and controlling a temperature of the object. According to the method, it is possible to minimize the side effects such as scratches or contamination of the sample that occur in a conventional chemical-mechanical planarization process. In addition, it is possible to allow precise planarization in nanometers (nm) and simultaneously perform planarization to a side surface of a device as well as a large-sized surface, thereby reducing cost and time required for the planarization process. Moreover, since the surface roughness and the electrical conductivity are improved, it is possible to increase the efficiency and output of the LED device.

公开(公告)号：US20230037132A1

公开(公告)日：2023-02-02

申请号：US17864124

申请日：2022-07-13

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ho Seong JANG ,  Gumin KANG ,  Hyungduk KO ,  Seung Yong LEE ,  Kwang Rok MUN

IPC: C09K11/77 ,  C09K11/02 ,  G01N21/64

Abstract: Provided are a core-multishell upconversion nanophosphor capable of being excited by 800±20 nm, 980±20 nm, and 1530±20 nm near-infrared (NIR) light to emit various colors including green, red, blue, and combinations thereof, and a transparent polymer composite including the upconversion nanophosphor. A crystalline shell may be formed between the red, green, and blue emission layers to enable emission of pure red, green, or blue light, and be further formed on an outermost surface to provide a color-tunable and high-brightness upconversion nanophosphor.

公开(公告)号：US20220154339A1

公开(公告)日：2022-05-19

申请号：US16952530

申请日：2020-11-19

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： In Soo KIM ,  Chun Keun KIM ,  KWAN IL LEE ,  Gumin KANG ,  Joon Hyun KANG ,  Jin Gu KANG ,  Wonsuk LEE

IPC: C23C16/52 ,  C23C16/455 ,  G01N21/65 ,  C23C16/44 ,  G01J3/44 ,  G01J3/02

Abstract: A thin film deposition apparatus mounted with a Raman analysis system is discussed. The thin film deposition apparatus includes a reaction chamber providing an inner space for forming a thin film. An opening is formed on the thin film deposition apparatus to be connected to the reaction chamber, and the opening is closed by a window through which light can be transmitted.

公开(公告)号：US20220064526A1

公开(公告)日：2022-03-03

申请号：US17369961

申请日：2021-07-08

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Ho Seong JANG ,  Gumin KANG ,  A-Ra HONG ,  Seung Yong LEE

IPC: C09K11/77 ,  C09K11/02

Abstract: Provided is a core/multishell tetragonal upconversion nanophosphor capable of being excited by near-infrared (NIR) light having wavelengths of 800±20 nm, 980±20 nm, and 1532±20 nm to emit light of blue, green, red, and combinations thereof.