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    • 6. 发明授权
    • Dye-sensitized solar cells
    • 染料敏化太阳能电池
    • US4190950A
    • 1980-03-04
    • US889688
    • 1978-03-24
    • Terje A. Skotheim
    • Terje A. Skotheim
    • H01L31/07B01J17/00
    • H01L31/07H01L51/4226Y02E10/542Y02E10/549
    • A low-cost dye-sensitized Schottky barrier solar cell comprised of a substrate of semiconductor with an ohmic contact on one face, a sensitizing dye adsorbed onto the opposite face of the semiconductor, a transparent thin-film layer of a reducing agent over the dye, and a thin-film layer of metal over the reducing agent. The ohmic contact and metal layer constitute electrodes for connection to an external circuit and one or the other or both are made transparent to permit light to penetrate to the dye and be absorbed therein for generating electric current. The semiconductor material chosen to be the substrate is one having a wide bandgap and which therefore is transparent; the dye selected is one having a ground state within the bandgap of the semiconductor to generate carriers in the semiconductor, and a first excited state above the conduction band edge of the semiconductor to readily conduct electrons from the dye to the semiconductor; the reducing agent selected is one having a ground state above the ground state of the sensitizer to provide a plentiful source of electrons to the dye during current generation and thereby enhance the generation; and the metal for the thin-film layer of metal is selected to have a Fermi level in the vicinity of or above the ground state of the reducing agent to thereby amply supply electrons to the reducing agent.
    • 一种低成本染料敏化肖特基势垒太阳能电池,由一面上具有欧姆接触的半导体衬底,吸附在半导体的相对面上的敏化染料,在染料上的还原剂的透明薄膜层 和还原剂上的金属薄膜层。 欧姆接触和金属层构成用于连接到外部电路的电极,并且一个或另一个或两者均为透明的,以允许光穿透染料并被吸收以产生电流。 选择为基板的半导体材料是具有宽带隙的半导体材料,因此是透明的; 选择的染料是在半导体的带隙内具有基态以在半导体中产生载流子的染料,并且在半导体的导带边缘之上的第一激发态能够容易地将电子从染料导入半导体; 选择的还原剂是具有高于敏化剂的基态的基态的电荷,在电流产生期间向染料提供充足的电子源,从而增强产生; 并且金属薄膜层的金属被选择为在还原剂的基态附近或高于还原剂的基态具有费米能级,从而向还原剂供应电子。