Photodetector comprising dual cells with different thickness of interposing substrates, photodetection device, laser imaging detection and ranging apparatus and method of manufacturing a photodetector

A photodetection device comprising,

• a photodetector including a first cell converting incident light into electric charges and a second cell converting incident light into electric charges, wherein the first cell includes a first semiconductor layer a second semiconductor layer and a first substrate interposing the first semiconductor layer with the second semiconductor layer, and the second cell includes a third semiconductor layer a fourth semiconductor layer and a second substrate interposing the third semiconductor layer with the fourth semiconductor layer and the second substrate is larger in thickness than the first substrate;
• a first processor calculating charges from the first cell as distance information;
• a second processor calculating charges from the second cell as distance information and
• a distance information selector for selecting the calculated distance information by the first processor and the second processor.

A LIDAR apparatus comprising:

• a light source emitting light to an object;
• and
• a first cell converting incident light reflected by the object into electric charges;
• and
• a second cell converting incident light reflected by the object into electric charges;
• and
• wherein the first cell includes a first semiconductor layer a second semiconductor layer and a first substrate interposing the first semiconductor layer with the second semiconductor layer and the second cell includes a third semiconductor layer a fourth semiconductor layer and a second substrate interposing the third semiconductor layer with the fourth semiconductor layer;
• and the second substrate is larger in thickness than the first substrate.