公开(公告)号：WO2013180662A1

公开(公告)日：2013-12-05

申请号：PCT/SG2013/000231

申请日：2013-06-03

Applicant: NATIONAL UNIVERSITY OF SINGAPORE

Inventor： LEE, Jonghak ,  ÖZYILMAZ, Barbaros ,  KAHYA, Orhan

IPC: H01G11/36 ,  C01B31/04 ,  C01B31/02

CPC classification number: H01L31/0224 ,  B29C43/003 ,  B29K2105/04 ,  B29L2031/00 ,  C01B32/182 ,  C23F4/04 ,  H01G11/28 ,  H01G11/36 ,  H01G11/38 ,  H01G11/48 ,  H01G11/68 ,  H01G11/70 ,  H01G11/86 ,  Y02E60/13 ,  Y10T29/43 ,  Y10T428/24997

Abstract: The application disloses methods of fabricating three-dimensional (3D) graphene crystalline foam, based on mixing a carbon source with a skelet (scaffold) powder. In one embodiment heat and pressure are used to compact the carbon and a metal powder into a close packed structure. In another embodiment a 3D crystalline graphene foam is fabricated with a large surface area (550m 2 /g) from a 3D metal foam, depositing a layer of graphene using chemical vapour deposition (CVD), depositing a polymer support and removing the metal via wet chemical etching, such that the graphene retains the configuration, and then finally removing the polymer. A method of fabricating the metal foam framework and coating the metal with graphene are also disclosed.

Abstract translation: 基于将碳源与骨架（支架）粉末混合，该方法解决了制造三维（3D）石墨烯结晶泡沫的方法。 在一个实施例中，使用热和压力将碳和金属粉末压实成紧密堆积的结构。 在另一个实施例中，3D结晶石墨烯泡沫由3D金属泡沫制成具有大的表面积（550m 2 / g），使用化学气相沉积（CVD）沉积一层石墨烯，沉积聚合物载体并通过湿化学物质去除金属 蚀刻，使得石墨烯保持配置，然后最后除去聚合物。 还公开了制造金属泡沫框架并用石墨烯涂覆金属的方法。

公开(公告)号：WO2013048347A1

公开(公告)日：2013-04-04

申请号：PCT/SG2012/000366

申请日：2012-10-01

Applicant: NATIONAL UNIVERSITY OF SINGAPORE

Inventor： OZYILMAZ, Barbaros ,  KAHYA, Orhan ,  TOH, Chee Tat ,  JAISWAL, Manu ,  SAHA, Surajit

IPC: H01L29/772 ,  H01L29/16 ,  B82Y10/00 ,  G11B7/241 ,  G11B9/02 ,  G11C11/22 ,  G11C11/56 ,  G11C13/02

CPC classification number: G11C11/223 ,  B82Y10/00 ,  B82Y20/00 ,  G11B7/241 ,  G11B9/02 ,  G11C11/22 ,  G11C13/0002 ,  G11C13/04 ,  G11C2213/35 ,  G11C2213/53 ,  H01L29/1606 ,  H01L29/516 ,  H01L29/778 ,  H01L43/02

Abstract: In accordance with an embodiment of the invention, there is provided a graphene ferroelectric device. The device comprises a graphene transistor channel and a ferroelectric gate of the graphene transistor channel, the ferroelectric gate comprising a linear polarization at a first applied gate voltage less than a threshold voltage, and a hysteretic polarization at a second applied gate voltage greater than the threshold voltage. The device may be configured to undergo optical switching of the graphene transistor channel between a high resistance state and a low resistance state in response to photoillumination of the device.

Abstract translation: 根据本发明的实施例，提供了一种石墨烯铁电体器件。 该器件包括石墨烯晶体管沟道和石墨烯晶体管沟道的铁电栅极，铁电栅极包括在小于阈值电压的第一施加栅极电压处的线性极化，以及在大于阈值的第二施加栅极电压处的滞后极化 电压。 该器件可以被配置为响应于器件的光照而在高电阻状态和低电阻状态之间进行石墨烯晶体管沟道的光学切换。

公开(公告)号：WO2014055040A1

公开(公告)日：2014-04-10

申请号：PCT/SG2013/000429

申请日：2013-10-03

Applicant: NATIONAL UNIVERSITY OF SINGAPORE

Inventor： ÖZYILMAZ, Barbaros ,  KAHYA, Orhan

IPC: H01L31/0256 ,  H01L41/083 ,  H01L27/20 ,  B32B9/04 ,  G06F3/045

CPC classification number: G06F1/16 ,  B32B27/08 ,  B32B27/304 ,  B32B27/322 ,  B32B2307/20 ,  B32B2307/412 ,  B32B2307/42 ,  B32B2457/208 ,  B82Y15/00 ,  B82Y40/00 ,  C23C16/042 ,  C23C16/26 ,  C23C16/46 ,  G06F3/044 ,  G06F3/045 ,  G06F2203/04103 ,  G06F2203/04107 ,  G06F2203/04112 ,  H01L41/193 ,  H01L41/257 ,  Y10S977/843 ,  Y10S977/956

Abstract: The invention relates to layered graphene-ferroelectric structures for use as transparent electrodes in touch panels and display screen applications.

Abstract translation: 本发明涉及用作触摸面板和显示屏应用中的透明电极的层状石墨烯 - 铁电结构。

公开(公告)号：WO2013180661A1

公开(公告)日：2013-12-05

申请号：PCT/SG2013/000230

申请日：2013-06-03

Applicant: NATIONAL UNIVERSITY OF SINGAPORE

Inventor： ÖZYILMAZ, Barbaros ,  KAHYA, Orhan ,  LEE, Jonghak

IPC: H01L31/0224 ,  H01G9/042 ,  C25B11/12

CPC classification number: H01L31/0224 ,  B29C43/003 ,  B29K2105/04 ,  B29L2031/00 ,  C01B32/182 ,  C23F4/04 ,  H01G11/28 ,  H01G11/36 ,  H01G11/38 ,  H01G11/48 ,  H01G11/68 ,  H01G11/70 ,  H01G11/86 ,  Y02E60/13 ,  Y10T29/43 ,  Y10T428/24997

Abstract: The invention relates to three-dimensional crystalline foams with high surface areas, high lithium capacity, and high conductivity for use as electrode materials and methods for their fabrication. In additional embodiments, the invention also relates to the use of three-dimensional crystalline foams as supercapacitors for improved charge and energy storage.

Abstract translation: 本发明涉及具有高表面积，高锂容量和高导电性的三维结晶泡沫，用作电极材料及其制造方法。 在另外的实施方案中，本发明还涉及三维结晶泡沫作为超级电容器用于改善电荷和能量储存的用途。

公开(公告)号：WO2013141817A1

公开(公告)日：2013-09-26

申请号：PCT/SG2013/000114

申请日：2013-03-22

Applicant: NATIONAL UNIVERSITY OF SINGAPORE

Inventor： ÖZYILMAZ, Barbaros ,  SAHA, Surajit ,  TOH, Chee Tat ,  KAHYA, Orhan ,  NI, Guang Xin

IPC: H01L31/0256 ,  H01L31/0224 ,  H01L51/46 ,  H01G9/20

CPC classification number: H01L31/022466 ,  H01L31/022425 ,  H01L51/0036 ,  H01L51/4253 ,  H01L51/4273 ,  H01L51/441 ,  H01L51/442 ,  Y02E10/542 ,  Y02E10/549

Abstract: A photovoltaic cell (10) is disclosed that includes an active layer (20) sandwiched by top and bottom graphene-ferroelectric electrodes (30T, 30B) each having a graphene layer (32) and a polarized ferroelectric layer (34). The polarized ferroelectric layer defines an internal electric field (EI). Light (50) irradiates the active layer through the top graphene-ferroelectric electrode, causing the generation in the active layer of electrons (e) and holes (h) as charge carriers. The internal electric field causes the electrons and holes to move towards opposite electrodes, giving rise to a photocurrent (ipc), while also mitigating undesirable charge-carrier recombination.

Abstract translation: 公开了一种光电池（10），其包括夹有石墨烯层（32）和极化铁电层（34）的顶部和底部石墨烯 - 铁电电极（30T，30B）的有源层（20）。 极化铁电层限定内部电场（EI）。 光（50）通过顶部石墨烯 - 铁电电极照射有源层，导致在电子（e）和空穴（h）的有源层中产生电荷载体。 内部电场导致电子和空穴向相对电极移动，产生光电流（ipc），同时也减轻了不期望的电荷载流子复合。