Photodetectors and photovoltaics based on semiconductor nanocrystals

摘要

A composite material is described. The composite material comprises semiconductor nanocrystals, and organic molecules that passivate the surfaces of the semiconductor nanocrystals. One or more properties of the organic molecules facilitate the transfer of charge between the semiconductor nanocrystals. A semiconductor material is described that comprises p-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of electrons in the semiconductor material being greater than or equal to a mobility of holes. A semiconductor material is described that comprises n-type semiconductor material including semiconductor nanocrystals. At least one property of the semiconductor material results in a mobility of holes in the semiconductor material being greater than or equal to a mobility of electrons.

主权项

1. A composite material comprising:
a first semiconductor nanocrystal; a second semiconductor nanocrystal; at least one organic molecule to passivate surfaces of the first semiconductor nanocrystal and the second semiconductor nanocrystal, at least one property of the at least one organic molecule being to facilitate a transfer of charge between the first semiconductor nanocrystal and the second semiconductor nanocrystal, the at least one organic molecule including a benzene ring that includes at least two functional groups, a first of the at least two functional groups on the at least one organic molecule binding the first semiconductor nanocrystal, a second of the at least two functional groups on the at least one organic molecule binding the second semiconductor nanocrystal; and at least one bidentate linker coupled to at least one of the first semiconductor nanocrystal and the second semiconductor nanocrystal, the at least one bidentate linker consisting of a first end group and a second end group and including a conjugated moiety coupled between the first end group and the second end group.