Concrete solar cell
    1.
    发明授权
    Concrete solar cell 失效
    混凝土太阳能电池

    公开(公告)号:US5672214A

    公开(公告)日:1997-09-30

    申请号:US441451

    申请日:1995-05-15

    摘要: An inexpensive, robust concrete solar cell (10) comprises a photovoltaic material embedded in and extending beyond front and rear major surfaces (18 and 16) of a matrix layer (14). The matrix layer typically comprises a high-strength, cementitious material, such as a macrodefect-free cement, reinforced with electrically nonconductive fibers (54) distributed throughout the matrix layer. The photovoltaic material comprises particles (12) of high-resistivity single crystal silicon, typically ball milled from ingot sections unsuitable for slicing into silicon wafers. An aluminum sheet (28) attached to the rear major surface provides electrical contact to one of two electrical region (22 and 24) of the semiconductor particle, and a translucent conductive layer (30) on the front major surface provides electrical contacts to the second electrical region. Overlapping electrically conductive reinforcing fibers (52) are embedded at the front major surface of the matrix layer to decrease the sheet resistivity of the surface and to inhibit the formation of surface cracks. Digitated electrode (32) further improves surface conductivity for conducting current off the cell. A voltage is generated between the two conductive layers when light incident on the semiconductor particles through the translucent conductive layer creates charge carriers that are propelled toward the conductive layers by a built-in field.

    摘要翻译: 廉价,坚固的混凝土太阳能电池(10)包括嵌入并延伸到矩阵层(14)的前后主表面(18和16)之外的光伏材料。 基质层通常包含高分子水泥质材料,例如无分子水泥,通过分布在整个基质层中的非导电纤维(54)增强。 光伏材料包括高电阻率单晶硅的颗粒(12),通常由不适于切片成硅晶片的锭块球磨成球形。 附接到后主表面的铝片(28)提供与半导体颗粒的两个电区域(22和24)之一的电接触,并且在前主表面上的半透明导电层(30)提供到第二 电气区域。 重叠的导电增强纤维(52)嵌入在基体层的前主表面,以降低表面的薄层电阻率并抑制表面裂纹的形成。 数字电极(32)进一步提高了表面电导率,以将电流从电池中导出。 当通过半透明导电层入射到半导体粒子上的光产生通过内置场向导电层推进的电荷载流子时,在两个导电层之间产生电压。

    Concrete solar cell
    2.
    发明授权
    Concrete solar cell 失效
    混凝土太阳能电池

    公开(公告)号:US5415700A

    公开(公告)日:1995-05-16

    申请号:US166307

    申请日:1993-12-10

    摘要: An inexpensive, robust concrete solar cell (10) comprises a photovoltaic material embedded in and extending beyond the major surfaces (16 and 18) of a matrix layer (14). The matrix layer typically comprises a high strength, cementitious material, such as a macrodefect free cement. The photovoltaic material comprises particles (12) of high-resistivity single crystal silicon, typically ball milled from ingot sections unsuitable for slicing into silicon wafers. The ingot sections include unprecipitated dissolved oxygen that is electrically activated by a low temperature annealing process to produce n-type silicon, even in silicon crystals that include a p-type dopant. An aluminum sheet (28), positioned on the backside of the matrix layer, is briefly melted together with the silicon particles to produce a p-type aluminum-doped silicon region (22) that forms a pn junction with the n-type region (24) of the particle. The aluminum sheet also provides the electrical contact to the p-type regions. The front surface of the matrix layer, from which the n-portion of the silicon particle protrudes, is covered with a translucent indium tin oxide conductive layer (30) that provides electrical contacts to the n-portion of the pn junction and digitated electrode (32) for conducting current off the cell. A voltage is generated between the two conductive layers when light incident on the photovoltaic particle through the indium tin oxide conductive layer creates charge carriers.

    摘要翻译: 廉价,坚固的混凝土太阳能电池(10)包括嵌入并延伸到矩阵层(14)的主表面(16和18)之外的光伏材料。 基质层通常包括高强度的水泥质材料,例如无损坏的水泥。 光伏材料包括高电阻率单晶硅的颗粒(12),通常由不适于切片成硅晶片的锭块球磨成球形。 锭部分包括通过低温退火工艺电活化以产生n型硅的未沉淀的溶解氧,即使在包括p型掺杂剂的硅晶体中也是如此。 位于基质层背面的铝片(28)与硅颗粒一起短暂熔化,以产生与n型区形成pn结的p型铝掺杂硅区(22) 24)颗粒。 铝板还提供与p型区域的电接触。 硅颗粒的n部分从其突出的基质层的前表面被透明的氧化铟锡导电层(30)覆盖,该氧化铟锡导电层(30)提供与pn结的n部分和数字化电极 32)用于将电流从电池中导出。 当通过铟锡氧化物导电层入射到光伏颗粒上的光产生电荷载流子时,在两个导电层之间产生电压。

    Ergonomic tractor seat armrest and hand control
    3.
    发明授权
    Ergonomic tractor seat armrest and hand control 失效
    符合人体工程学的拖拉机座椅扶手和手控

    公开(公告)号:US06634453B2

    公开(公告)日:2003-10-21

    申请号:US09945549

    申请日:2001-08-29

    IPC分类号: B60K2600

    CPC分类号: G05G1/62 B60N2/797

    摘要: An armrest having an elbow-supporting portion and an associated control panel for a utility vehicle is arranged such that the operator's forearm can be supported on a fulcrum position on the elbow-supporting portion and can be pivoted in a swinging direction to reach plural controls. A hand rest is also provided on the control panel and located such that an operator can span his forearm from the elbow at the fulcrum position of the elbow-supporting portion, to the hand rest located on the control panel.

    摘要翻译: 具有弯头支撑部的扶手和用于多用途车的相关控制面板被布置成使得操作者的前臂能够被支撑在肘部支撑部分上的支点位置,并且可以在摆动方向上枢转以达到多个控制。 手控台还设置在控制面板上,并且使得操作者能够将其前臂从肘部支撑在肘部支撑部分的支点位置延伸到位于控制面板上的扶手上。