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    • 1. 发明授权
    • Solar cell having an output-increasing, protective cover
    • 具有输出增加保护罩的太阳能电池
    • US5466301A
    • 1995-11-14
    • US267633
    • 1994-06-29
    • Milfred D. HammerbacherRussell R. Schmit
    • Milfred D. HammerbacherRussell R. Schmit
    • H01L31/0352H01L31/048H01L31/052H01L31/0384H01L31/18
    • H01L31/048H01L31/035281H01L31/0543H01L31/0547Y02E10/52
    • A flexible cover (14) for a flexible solar cell (12) protects the cell from the ambient and increases the cell's efficiency. The cell (12)includes silicon particles (16) held in a flexible aluminum sheet matrix (20,22). The cover (14) is a flexible, protective layer (60) of a light-transparent material such as a fluoropolymer, preferably TEFZEL.RTM. film having a relatively flat upper, free surface (64) and an opposed surface (66) coated with an adhesive, preferably EVA. The surface (66) is applied to the particles (16) so as to include first portions (68) which conform to the poles (31 P) and the polar regions (31R) of the particles (16) and second, projecting convex (72) or concave (90) prism-like portions which define spaces (78) in conjunction with the reflective surface (20T) of one aluminum sheet (20). Without the cover (14), light (50) falling on the surface (20T) between the particles (16) is wasted, that is, it does not fall on a particle (16). The surfaces of the second portions (72,90) are non-parallel to the direction of the otherwise wasted light (50), which, together with a selected relationship between the refractive indices of the cover 14 and the spaces (78), results in sufficient diffraction of the otherwise wasted light (50) so that about 25% of it is reflected from the surface (20T) onto a particle (16).
    • 用于柔性太阳能电池(12)的柔性盖(14)保护电池不受环境影响,并提高电池的效率。 电池(12)包括保持在柔性铝片基体(20,22)中的硅颗粒(16)。 盖(14)是诸如含氟聚合物的光透明材料的柔性保护层(60),优选TEFZEL TM膜具有相对平坦的上部自由表面(64)和相对表面(66) 粘合剂,优选EVA。 将表面(66)施加到颗粒(16)上,以包括符合磁极(31P)和颗粒(16)的极性区域(31R)的第一部分(68)和第二部分 72)或与一个铝板(20)的反射表面(20T)结合限定空间(78)的凹(90)棱柱形部分。 没有盖(14),落在颗粒(16)之间的表面(20T)上的光(50)被浪费,即不落在颗粒(16)上。 第二部分(72,90)的表面不平行于另外浪费的光(50)的方向,其与盖14和空间(78)的折射率之间的选定关系一起产生 在否则浪费的光(50)的足够衍射中,使得其大约25%从表面(20T)反射到颗粒(16)上。
    • 3. 发明授权
    • Emitter wrap-through back contact solar cells on thin silicon wafers
    • 在薄硅晶片上的发射器回接接触太阳能电池
    • US07649141B2
    • 2010-01-19
    • US10880190
    • 2004-06-29
    • Russell R. SchmitJames M. Gee
    • Russell R. SchmitJames M. Gee
    • H01L31/00H02N6/00
    • H01L31/0682H01L31/022458Y02E10/547
    • A thin emitter wrap-through solar cell and method for making a thin emitter wrap-through solar cell. The cell preferably includes a silicon wafer substrate having a thickness of less than 280 microns. The p-type area on the back side of the cell is minimized, which maximizes the collector area and reduces or eliminates stress due to passivation of the p-type area, which is required for conventional solar cells. The efficiency of the cell of the present invention peaks for a much smaller thickness than that for conventional cells. Thus thin wafers of inexpensive, lower quality silicon may be used without a significant efficiency penalty, providing a large cost advantage over other solar cell configurations. Vias through the substrate, which connect emitter layers on the front and back surfaces of the substrate, may consist of holes which are doped, or alternatively may be solid doped channels formed by migration of a solvent, which preferably contains a dopant, caused by a gradient-driven process.
    • 用于制造薄发射器包裹太阳能电池的薄发射器包裹太阳能电池和方法。 电池优选包括厚度小于280微米的硅晶片衬底。 电池背面的p型区域被最小化,这使得集电极面积最大化并且减少或消除了由常规太阳能电池所需的p型区域的钝化引起的应力。 本发明的电池的效率比常规电池的效率高得多。 因此,可以使用廉价,低质量的硅的薄晶片,而没有显着的效率损失,相比其他太阳能电池配置提供了巨大的成本优势。 穿过衬底的通孔,其连接衬底的前表面和后表面上的发射极层,可以由掺杂的孔组成,或者可以是由优选含有掺杂剂的溶剂的迁移形成的固体掺杂通道, 梯度驱动过程。