PHOTODETECTOR UTILIZING QUANTUM DOTS AND PEROVSKITE HYBRIDS AS LIGHT HARVESTERS

摘要

A broad-band photodetector utilizes perovskite hybrid material and quantum dots as light harvesters. In particular, the photodetector is configured so that the structural defects on the surface of a quantum dot layer are passivated with perovskite hybrid material. As a result, the trap states on the surface of the quantum dot material is reduced, allowing leakage currents in the quantum dot material to be significantly reduced. As such, the photodetector is able to achieve broad-band operation, with enhanced photoresponsitivity and detectivity.

主权项

1. A photodetector comprising:
an at least partially light transparent first electrode; a quantum dot layer positioned adjacent to said first electrode; a perovskite hybrid layer positioned directly adjacent to said quantum dot layer; and a second electrode positioned adjacent to said perovskite hybrid layer.