Efficient solar cells using all-organic nanocrystalline networks

Patent · Tue Jun 08 04:00:00 EDT 2021

OSTI ID:1824061

Sun, Kai; Yang, Fan; Forrest, Stephen R.

An optoelectronic device and a method of fabricating a photosensitive optoelectronic device includes depositing a first organic semiconductor material on a first electrode to form a continuous first layer; depositing a layer of a second organic semiconductor material on the first layer to form a discontinuous second layer, portions of the first layer remaining exposed; and depositing the first organic semiconductor material on the second layer to form a discontinuous third layer, portions of at least the second layer remaining exposed. The depositing of the first and second organic semiconductor materials are alternated a number of times until a final layer of the second organic material is added to form a continuous layer. A second electrode is deposited over this final layer. One of the first electrode and the second electrode is transparent, and the first organic semiconductor material is one or more donor-type materials or one or more acceptor-type materials relative to second organic semiconductor material, which is one or more materials of the other material type.

• Research Organization: Univ. of Michigan, Ann Arbor, MI (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC36-99GO10337
• Assignee: The Regents of the University of Michigan (Ann Arbor, MI)
• Patent Number(s): 11,031,567
• Application Number: 11/880,210
• OSTI ID: 1824061
• Country of Publication: United States
• Language: English