公开(公告)号：US11590609B2

公开(公告)日：2023-02-28

申请号：US13744941

申请日：2013-01-18

Applicant: Purdue Research Foundation

Inventor： Gary J. Cheng ,  Yiliang Liao ,  Yingling Yang ,  Chang Ye

IPC: B23K26/356

Abstract: Methods and apparatuses for processing materials to enhancing the material's surface strength, improving the material's cyclic and thermal stability of microstructures, and extend the material's fatigue performance. Embodiments include laser shock peening at material temperatures that are moderately elevated (from the material's perspective) above room temperature. Alternate embodiments include laser shock peening at very cold (cryogenic) material temperatures. Still further embodiments include laser shock peening while covering the surface of the material being processed with an active agent that interacts with the laser energy and enhances the pressure exerted on the surface.

公开(公告)号：US11819946B2

公开(公告)日：2023-11-21

申请号：US18171423

申请日：2023-02-20

Applicant: Purdue Research Foundation

Inventor： Gary J. Cheng ,  Yiliang Liao ,  Yingling Yang ,  Chang Ye

IPC: B23K26/356

CPC classification number: B23K26/356

Abstract: Methods and apparatuses for processing materials to enhancing the material's surface strength, improving the material's cyclic and thermal stability of microstructures, and extend the material's fatigue performance. Embodiments include laser shock peening at material temperatures that are moderately elevated (from the material's perspective) above room temperature. Alternate embodiments include laser shock peening at very cold (cryogenic) material temperatures. Still further embodiments include laser shock peening while covering the surface of the material being processed with an active agent that interacts with the laser energy and enhances the pressure exerted on the surface.

公开(公告)号：US20230278140A1

公开(公告)日：2023-09-07

申请号：US18171423

申请日：2023-02-20

Applicant: Purdue Research Foundation

Inventor： Gary J. Cheng ,  Yiliang Liao ,  Yingling Yang ,  Chang Ye

IPC: B23K26/356

CPC classification number: B23K26/356

Abstract: Methods and apparatuses for processing materials to enhancing the material’s surface strength, improving the material’s cyclic and thermal stability of microstructures, and extend the material’s fatigue performance. Embodiments include laser shock peening at material temperatures that are moderately elevated (from the material’s perspective) above room temperature. Alternate embodiments include laser shock peening at very cold (cryogenic) material temperatures. Still further embodiments include laser shock peening while covering the surface of the material being processed with an active agent that interacts with the laser energy and enhances the pressure exerted on the surface.

公开(公告)号：US20130180969A1

公开(公告)日：2013-07-18

申请号：US13744941

申请日：2013-01-18

Applicant: Purdue Research Foundation

Inventor： Gary J. Cheng ,  Yiliang Liao ,  Yingling Yang ,  Chang Ye

IPC: B23K26/00

CPC classification number: B23K26/356

Abstract: Methods and apparatuses for processing materials to enhancing the material's surface strength, improving the material's cyclic and thermal stability of microstructures, and extend the material's fatigue performance. Embodiments include laser shock peening at material temperatures that are moderately elevated (from the material's perspective) above room temperature. Alternate embodiments include laser shock peening at very cold (cryogenic) material temperatures. Still further embodiments include laser shock peening while covering the surface of the material being processed with an active agent that interacts with the laser energy and enhances the pressure exerted on the surface.

Abstract translation: 用于加工材料以提高材料的表面强度，改善材料的微观结构的循环和热稳定性以及延长材料的疲劳性能的方法和装置。 实施例包括在高于室温的适度升高的材料温度（从材料的角度）的激光冲击硬化。 替代实施例包括在非常冷（低温）材料温度下的激光冲击硬化。 另外的实施例包括激光冲击喷丸处理，同时用与激光能量相互作用并增强施加在表面上的压力的活性剂覆盖被处理材料的表面。

公开(公告)号：US20130092664A1

公开(公告)日：2013-04-18

申请号：US13708180

申请日：2012-12-07

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： Gary J. Cheng ,  Martin Yi Zhang ,  Yingling Yang

IPC: B23K26/00

CPC classification number: B23K26/352 ,  H01L31/0322 ,  H01L31/03923 ,  H01L31/03925 ,  H01L31/1836 ,  H01L31/1852 ,  H01L31/1872 ,  Y02E10/541 ,  Y02E10/544 ,  Y02P70/521

Abstract: A system and method for enhancing the conversion efficiency of thin film photovoltaics. The thin film structure includes a photovoltaic absorbent layer covered by a confinement layer. A laser beam passes through the confinement layer and hits the photovoltaic absorbent layer. The laser can be pulsed to create localized rapid heating and cooling of the photovoltaic absorbent layer. The confinement layer confines the laser induced plasma plume creating a localized high-pressure condition for the photovoltaic absorbent layer. The laser beam can be scanned across specific regions of the thin film structure. The laser beam can be pulsed as a series of short pulses. The photovoltaic absorbent layer can be made of various materials including copper indium diselenide, gallium arsenide, and cadmium telluride. The photovoltaic absorbent layer can be sandwiched between a substrate and the confinement layer, and a molybdenum layer can be between the substrate and the photovoltaic absorbent layer.

Abstract translation: 一种提高薄膜光伏转换效率的系统和方法。 薄膜结构包括被限制层覆盖的光伏吸收层。 激光束通过限制层并撞击光伏吸收层。 激光可以被脉冲以产生光伏吸收层的局部快速加热和冷却。 限制层限制激光诱导的等离子体羽流，为光伏吸收层产生局部高压条件。 可以在薄膜结构的特定区域上扫描激光束。 激光束可以作为一系列短脉冲脉冲。 光电吸收层可以由各种材料制成，包括二硒硒化铜，砷化镓和碲化镉。 光电吸收层可以夹在基板和限制层之间，钼层可以在基板和光电吸收层之间。