Rice University Develops Atomic-Thin CCD

Sidong Lei, a graduate student in the Rice lab of materials scientist Pulickel Ajayan, synthesized a single-layer matrix of copper, indium and selenium atoms (CIS).

Rice University: The device traps electrons formed when light hits the material and holds them until released for storage, Lei said. CIS pixels are highly sensitive to light because the trapped electrons dissipate so slowly, said Robert Vajtai, a senior faculty fellow in Rice’s Department of Materials Science and NanoEngineering. “There are many two-dimensional materials that can sense light, but none are as efficient as this material,” he said. “This material is 10 times more efficient than the best we’ve seen before.”

No info on the new sensor's QE is given, however article states that the sensor is transparent.

 

Manufacturing process starts with few-layer exfoliated CIS on a silicon substrate, ten fabricates three pairs of titanium/gold electrodes on top of the CIS and then cuts the CIS into three sections with a focused ion beam.