Nanocrystalline TiO2 Solar Cells Sensitized with InAs Quantum Dots

Pingrong Yu, Kai Zhu, Andrew Norman, Suzanne Ferrere, Arthur Frank, Arthur Nozik

Research output: Contribution to journalArticlepeer-review


We report nanocrystalline TiO2 solar cells sensitized with InAs quantum dots. InAs quantum dots of different sizes were synthesized and incorporated in solar cell devices. Efficient charge transfer from InAs quantum dots to TiO2 particles was achieved without deliberate modification of the quantum dot capping layer. A power conversion efficiency of about 1.7% under 5 mW/cm2 was achieved; this is relatively high for a nanocrystalline metal oxide solar cell sensitized with presynthesized quantum dots, but this efficiency could only be achieved at low light intensity. At one sun, the efficiency decreased to 0.3%. The devices are stable for at least weeks under room light in air.
Original languageAmerican English
Pages (from-to)25451-25454
Number of pages4
JournalJournal of Physical Chemistry B
Issue number50
StatePublished - 2006

NREL Publication Number

  • NREL/JA-270-41466


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