Thin-Film Solar Cell Fabricated on a Flexible Metallic Substrate

NREL (Inventor)

Research output: Patent

Abstract

A thin-film solar cell (10) is provided. The thin-film solar cell (10) comprises a flexible metallic substrate (12) having a first surface and a second surface. A back metal contact layer (16) is deposited on the first surface of the flexible metallic substrate (12). A semiconductor absorber layer (14) is deposited on the back metal contact. A photoactive film deposited on the semiconductorabsorber layer (14) forms a heterojunction structure and a grid contact (24) deposited on the heterjunction structure. The flexible metal substrate (12) can be constructed of either aluminium or stainless steel. Furthermore, a method of constructing a solar cell is provided. The method comprises providing an aluminum substrate (12), depositing a semiconductor absorber layer (14) on the aluminumsubstrate (12), and insulating the aluminum substrate (12) from the semiconductor absorber layer (14) to inhibit reaction between the aluminum substrate (12) and the semiconductor absorber layer (14).
Original languageAmerican English
Patent number7,053,294 B2
StatePublished - 2006

NREL Publication Number

  • NREL/PT-520-40301

Keywords

  • flexible metallic substrate
  • photoactive film
  • semiconductor absorber layer
  • solar cells
  • thin film

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