ARANGO

LAB

addressing the energy crisis with research into new semiconducting materials

 

research

  1. 1.absorption and exciton formation

  2. 2.exciton diffusion

  3. 3.charge separation

  4. 4.charge diffusion toward electrodes

  5. 5.current flow through external circuit

PHOTON TO ELECTRON ENERGY CONVERSION

  1. chemically synthesized colloidal quantum dots (QDs)

  2. high purity inorganic interior

  3. soluble organic exterior

ORGANIC

AND

QUANTUM-DOT (QD)

SOLAR CELLS

transparency

electroluminescence

ORGANIC

AND

QUANTUM-

DOT (QD)

LEDS

WHY SOLAR PHOTOVOLTAICS? 

THE SOLAR RESOURCE IS IMMENSE

  1. Solar resource from developed land area is 2.5x energy used in US in 2007

Donor-acceptor solar cells

Solar cells fabricated from unconventional semiconductors, like organic molecular dyes, conjugated polymers, and quantum dots, follow device physics rules of operation that differ greater from those of conventional silicon solar cells.  The process of photocurrent generation is shown here.