| abstract |
A method of encapsulating PbS quantum dots is provided that includes depositing, using atomic layer deposition (ALD), a first layer of TiO 2 on a substrate, depositing, using ALD, a first layer of PbS quantum dots on the first layer of TiO 2 , and depositing, using ALD, an encapsulating layer of the TiO 2 on the first layer of TiO 2 and the first layer of PbS quantum dots, where the first layer of PbS quantum dots are encapsulated and separated by the first layer of TiO 2 and the encapsulating layer of TiO 2 . |