The University of North Carolina at Chapel Hill

Shangshang Chen

Jinsong Huang

Yuze Lin

The present disclosure is directed to perovskite-based solar cell device structures and compositions comprising one or more near infrared sensitive semiconducting materials. The near infrared sensitive semiconducting materials can extend the photoresponse spectra of the devices to the near infrared region, thereby improving the power conversion efficiency of the solar cell.

Perovskite solar cells with near-infrared sensitive layers

Described herein are surface treatment methods for removing one or more surface defect layers from polycrystalline films, polycrystalline films that are free of one or more defect surface layers, and use of the films in solar cells. In certain embodiments, the method is conducted by means of an adhesive tape or mechanical polishing. As described herein, solar cells containing the surface treated perovskite films show enhanced efficiency and stability.

Growing community of inventors

Chapel Hill, NC, United States of America

Shangshang Chen