UMI
Executive Report

The organic photographic sensor

This new generation sensor uses a more light-sensitive organic layer than conventional photodiode based sensors.

Julien Oger
joger@umi.us

The organic photographic sensor

This new generation sensor uses a more light-sensitive organic layer than conventional photodiode based sensors.

Benefits

  • More sensitive than ccd / cmos sensors to natural light
  • Cheaper than silicon sensors
  • More efficient than micro-lenses
  • Less sensitive than conventional infrared sensors
  • Less energy consuming than capacitive sensors

Issue

The digital technology of CCD and CMOS sensors limits their dynamics and sensitivity. On a BSI CMOS sensor, each photosite is composed of a photodiode and a read circuit. The problem lies in the fact that the diode is necessarily smaller than the photosite since it is isolated from neighbouring diodes: some photons arrive between the diodes and therefore do not reach the sensitive surface. To concentrate as many photons as possible on the diodes, extremely complex micro-lens arrays are used to install on the sensor. But the result is that a significant part of the light is lost.

Solution

Replace the silicon photodiode layer of the sensors with a layer of a photosensitive organic compound with a spectral sensitivity close to that of the eye. Instead of silicon photodiodes, it is a layer of an organic carbon-based compound, which produces an electrical charge when a photon touches it. The photoreceptor layer being uniform, photons can no longer fall between two photodiodes and be lost, so this type of sensor is more efficient.

Targeting

Targeted countries

Which market sectors are you looking to target with your project?

We would like to target Electronics industry and some application sectors like Medical / Medical device industry and Automotive industry

Indicate companies to be excluded

Panasonic USA

What types of professionals would you like to hear from on this project?

Mainly engineers / R&D people or Product Development Managers. Also Business Development services. And doctors / practitioners for Medical sector

Panel of professionals

61 answers