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US 10,916,380 B1Granted
Quantum dot-sensitized solar cell and method of making the same
AssigneeUnited Arab Emirates University
InventorsIhab M. Obaidat, Hee-Je Kim, Chandu V. V. Muralee Gopi, Sambasivam Sangaraju
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Abstract
A quantum dot sensitized solar cell (QDSSC) includes a highly catalytic Ni-doped CuS thin film as a counter electrode (CE). The Ni-doped CuS CE can deliver outstanding electrocatalytic activity, conductivity, and low-charge transfer resistance at the CE/electrolyte interface. As a result, the QDSSC can achieve higher efficiency (η=4.36%) than a QDSSC with a bare CuS CE (3.24%).
Claims3
A quantum dot-sensitized solar cell, consisting of:
- a quantum dot-sensitized photoanode, the photoanode consisting of TiO2, CdS, and CdSe;
- a redox couple including a liquid polysulfide electrolyte;
- a photo cathode including a Ni-doped CuS counter electrode, wherein the Ni-doped CuS is in the form of a plurality of nanoflake structures, each nanoflake structure comprising a nanoflake having an array of nanoparticles grown on a surface thereof, and a sealant.
A method of preparing a quantum dot-sensitized solar cell, comprising:
- preparing a Ni-doped CuS solution;
- immersing a plurality of fluorine-doped tin oxide substrates vertically in the Ni-doped CuS solution, wherein the substrates immersed in the Ni-doped CuS solution are heated in a hot air oven at about 60° C. for about 90 minutes;
- heating the substrates immersed in the Ni-doped CuS solution to provide a Ni-doped CuS counter electrode, wherein the Ni-doped CuS is in the form of a plurality of nanoflake structures, each nanoflake structure comprising a nanoflake having an array of nanoparticles grown on a surface thereof;
- providing a photoelectrode consisting of TiO2, CdS, and CdSe;
- assembling the counter electrode and the photoelectrode together using a sealant;
- and
- filling a space between the photoelectrode and the counter electrode with a polysulfide electrolyte.
4 more elements
Dependencies are inferred from the claim text.