公开(公告)号：WO2013109399A1

公开(公告)日：2013-07-25

申请号：PCT/US2012/071951

申请日：2012-12-28

Applicant: NANOGRAM CORPORATION

Inventor： LI, Weidong ,  PENGRA-LEUNG, Gina, Elizabeth ,  SRINIVASAN, Uma ,  CHIRUVOLU, Shivkumar ,  SOEDA, Masaya ,  LIU, Guojun

IPC: C09D11/00 ,  C09D11/10 ,  H05K1/02

CPC classification number: H01L21/02381 ,  B82Y30/00 ,  H01L21/02488 ,  H01L21/02532 ,  H01L21/02601 ,  H01L21/02628

Abstract: Improved silicon/germanium nanoparticle inks are described that have silicon/ germanium nanoparticles well distributed within a stable dispersion. In particular the inks are formulated with a centrifugation step to remove contaminants as well as less well dispersed portions of the dispersion. A sonication step can be used after the centrifugation, which is observed to result in a synergistic improvement to the quality of some of the inks. The silicon/germanium ink properties can be engineered for particular deposition applications, such as spin coating or screen printing. Appropriate processing methods are described to provide flexibility for ink designs without surface modifying the silicon/germanium nanoparticles. The silicon/germanium nanoparticles are well suited for forming semiconductor components, such as components for thin film transistors or solar cell contacts.

Abstract translation: 描述了改进的硅/锗纳米颗粒油墨，其具有良好分布在稳定分散体内的硅/锗纳米颗粒。 特别地，油墨通过离心步骤配制以除去分散体中的污染物以及较不良好分散的部分。 在离心之后可以使用超声处理步骤，这被观察到导致对一些油墨的质量的协同改进。 可以为特定的沉积应用（例如旋涂或丝网印刷）设计硅/锗油墨性质。 描述适当的处理方法以提供油墨设计的灵活性，而不对硅/锗纳米颗粒进行表面改性。 硅/锗纳米颗粒非常适合于形成诸如用于薄膜晶体管或太阳能电池触点的部件的半导体部件。

公开(公告)号：WO2014189886A1

公开(公告)日：2014-11-27

申请号：PCT/US2014/038721

申请日：2014-05-20

Applicant: NANOGRAM CORPORATION

Inventor： LI, Weidong ,  SOEDA, Masaya ,  PENGRA-LEUNG, Gina, Elizabeth ,  CHIRUVOLU, Shivkumar

IPC: C09D11/037 ,  C09D11/03

CPC classification number: B82Y30/00 ,  C09D11/037 ,  C09D11/52 ,  H01B1/20 ,  H01B1/24 ,  H01L21/02532 ,  H01L21/02601 ,  H01L21/02625 ,  H01L21/2225 ,  H01L21/228 ,  H01L21/268 ,  H01L29/0665 ,  H01L31/0682 ,  H01L31/1804 ,  Y02E10/547 ,  Y02P70/521

Abstract: Silicon based nanoparticle inks are formulated with viscous polycyclic alcohols to control the rheology of the inks. The inks can be formulated into pastes with non-Newtonian rheology and good screen printing properties. The inks can have low metal contamination such that they are suitable for forming semiconductor structures. The silicon based nanoparticles can be elemental silicon particles with or without dopant.

Abstract translation: 用粘性多环醇配制硅基纳米颗粒油墨以控制油墨的流变性。 油墨可以配制成具有非牛顿流变性和良好丝网印刷性能的浆料。 油墨可以具有低的金属污染，使得它们适合于形成半导体结构。 硅基纳米颗粒可以是具有或不具有掺杂剂的元素硅颗粒。

公开(公告)号：WO2014099978A1

公开(公告)日：2014-06-26

申请号：PCT/US2013/075762

申请日：2013-12-17

Applicant: NANOGRAM CORPORATION

Inventor： NGUYEN, Ha, Thi-Hoang ,  SOEDA, Masaya ,  LI, Weidong ,  SRINIVASAN, Uma

IPC: C09D11/03 ,  C09D11/10 ,  B41M5/00

CPC classification number: C08B11/02 ,  C08B11/22 ,  C09D11/52 ,  H01L31/022441 ,  H01L31/0384 ,  H01L31/03921 ,  H01L31/1804 ,  H01L31/1864 ,  Y02E10/547 ,  Y02P70/521

Abstract: Silicon based nanoparticle inks are described with very low metal contamination levels. In particular, metal contamination levels can be established in the parts-per-billion range. The inks of particular interest generally comprise a polymer to influence the ink rheology. Techniques are described that are suitable for purifying polymers soluble in polar solvents, such as alcohols, with respect metal contamination. Very low levels of metal contamination for cellulose polymers are described.

Abstract translation: 以非常低的金属污染水平描述了基于硅的纳米颗粒油墨。 特别是金属污染水平可以建立在十亿分之一的范围内。 特别感兴趣的油墨通常包含影响油墨流变性的聚合物。 描述了适用于纯化可溶于极性溶剂如醇的聚合物的技术，涉及金属污染。 描述了纤维素聚合物的非常低的金属污染水平。

公开(公告)号：EP2804912A1

公开(公告)日：2014-11-26

申请号：EP12865642.8

申请日：2012-12-28

Applicant: Nanogram Corporation

Inventor： LI, Weidong ,  PENGRA-LEUNG, Gina, Elizabeth ,  SRINIVASAN, Uma ,  CHIRUVOLU, Shivkumar ,  SOEDA, Masaya ,  LIU, Guojun

IPC: C09D11/00 ,  C09D11/10 ,  H05K1/02

CPC classification number: H01L21/02381 ,  B82Y30/00 ,  H01L21/02488 ,  H01L21/02532 ,  H01L21/02601 ,  H01L21/02628

Abstract: Improved silicon/germanium nanoparticle inks are described that have silicon/ germanium nanoparticles well distributed within a stable dispersion. In particular the inks are formulated with a centrifugation step to remove contaminants as well as less well dispersed portions of the dispersion. A sonication step can be used after the centrifugation, which is observed to result in a synergistic improvement to the quality of some of the inks. The silicon/germanium ink properties can be engineered for particular deposition applications, such as spin coating or screen printing. Appropriate processing methods are described to provide flexibility for ink designs without surface modifying the silicon/germanium nanoparticles. The silicon/germanium nanoparticles are well suited for forming semiconductor components, such as components for thin film transistors or solar cell contacts.