Integrated upconversion devices capable of upconverting incident visible to short wavelength infrared photons to visible photons are disclosed. The device may include a quantum dot-based photodiode and a light-emitting diode. The device may further include a gain element such as a thin-film transistor.
Integrated Optical Upconversion Devices and Related Methods
Lewis, J., & Klem, E. (2015). IPC No. U.S. Integrated Optical Upconversion Devices and Related Methods. (U.S. Patent No. 9054262).