Structure having low reflectance surface and method for manufacturing the structure, and solar cell and optical film having the structure
AssigneeAjou University Industry-Academic Cooperation Foundation
InventorsChang-Koo KIM, Jun-Hyun KIM
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Abstract
The present disclosure provides a structure having a low reflectance surface, wherein the structure comprises: a base plate; and a plurality of inclined rods protruding from a first face of the base plate and inclined relative to a normal line to the first face, wherein the inclined rods are spaced from each other. Travel paths of light beams in the structure may be longer along the inclined rods. As a result, a larger amount of light may be absorbed by the structure having a low reflectance surface. The amount of light-beams as reflected from the structure having a low reflectance surface may be significantly reduced.
Claims10
A method for manufacturing a structure having a low reflectance surface, wherein the method comprises:
- forming an etch mask on a first face of a silicon substrate, wherein the etch mask includes a plurality of mask patterns spaced from each other;
- impinging plasma ions obliquely against the first face of the silicon substrate having the etch mask thereon, thereby to anisotropically-etch the silicon substrate inclinedly in a region thereof excluding a masked region by the mask;
- and
- removing the etch mask.
A solar cell comprising:
- an emitter layer made of a first conductive type semiconductor material;
- and
- a light-absorbing layer made of a second conductive type semiconductor material opposite to the first conductive type and disposed below the emitter layer,
- wherein the light-absorbing layer forms a PN junction with the emitter layer,
- wherein the emitter layer has a first side facing the light-absorbing layer, and a second face opposite the first face,
- wherein the emitter layer includes:
- a base plate made of single crystal or polycrystalline silicon;
- and
- a plurality of inclined rods projecting from the second face of the base plate and obliquely to a normal line of the second face, wherein the rods are spaced from each other.
An optical film disposed on a display face of a display panel to reduce a reflectance of external light, wherein the optical film comprises:
- a base film having a first face facing the display panel and a second face facing the first face;
- and
- a plurality of inclined rods projecting from the second face of the base film and obliquely to a normal line of the second face, wherein the rods are spaced from each other.
Dependencies are inferred from the claim text.