University of Nebraska

Nutech Ventures

Qi Wang

Jinsong Huang

Qingfeng Dong

Xiaopeng Zheng

Zhengguo Xiao

Yuchuan Sao

Cheng Bi

Yang Bai

Rui Dong

Perovskite-based photoactive devices, such as solar cells, include an insulating tunneling layer inserted between the perovskite photoactive material and the electron collection layer to reduce charge recombination and concomitantly provide water resistant properties to the device.

Insulating tunneling contact for efficient and stable perovskite solar cells

A semiconductor device and a method for fabrication of the semiconductor device are described that include a perovskite layer formed using a solution process with lead iodine and methylammonium halide. In an implementation, a semiconductor device that employs example techniques in accordance with the present disclosure includes a cathode layer; an anode layer; and an active layer disposed between the cathode layer and the anode layer, where the active layer includes a perovskite layer including an interdiffused and annealed lead iodine (PbI) film and methylammonium halide (CHNHX) film. In implementations, a process for fabricating a continuous-perovskite semiconductor device that employs example techniques in accordance with the present disclosure includes spinning a PbIlayer onto an ITO-covered glass; spinning an MAI layer onto the PbIlayer; annealing the PbIlayer and the MAI layer; spinning a PCBM layer onto a resulting perovskite layer; and depositing an Al layer.

Photovoltaic perovskite material and method of fabrication

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Lincoln, NE, United States of America

Qi Wang