Electromagnetic wave detector and electromagnetic wave detector array

An electromagnetic wave detector comprising:

• a two-dimensional material layer having a first portion, a second portion, and a third portion, the second portion being disposed with a space being interposed between the first portion and the second portion in a first direction, the third portion being bridged between the first portion and the second portion in the first direction;
• a first electrode portion electrically connected to the first portion;
• a second electrode portion electrically connected to the first electrode portion via the first portion, the third portion, and the second portion of the two-dimensional material layer;
• a ferroelectric layer at least having a portion disposed on the third portion, and
• a semiconductor layer having a first surface and a second surface located opposite to the first surface, wherein
• the first surface has a first region, a second region, and a third region, the second region being disposed with a space being interposed between the first region and the second region in the first direction, the third region being disposed between the first region and the second region in the first direction,
• the electromagnetic wave detector further comprising an insulating layer disposed on the first region, the second region and the third region being exposed from the insulating layer, wherein
• the first portion of the two-dimensional material layer and the first electrode portion are disposed on the insulating layer,
• the second portion of the two-dimensional material layer is in contact with the second region,
• the third portion of the two-dimensional material layer is disposed with a space being interposed between the third portion and the third region in a direction orthogonal to the first surface, and
• the second electrode portion is in contact with the second surface, and is electrically connected to the first electrode portion via the first portion, the third portion and the second portion of the two-dimensional material layer, and the semiconductor layer.

An electromagnetic wave detector comprising:

• a two-dimensional material layer having a first portion, a second portion, and a third portion, the second portion being disposed with a space being interposed between the first portion and the second portion in a first direction, the third portion being bridged between the first portion and the second portion in the first direction;
• a first electrode portion electrically connected to the first portion;
• a second electrode portion electrically connected to the first electrode portion via the first portion, the third portion, and the second portion of the two-dimensional material layer:
• a ferroelectric layer at least having a portion disposed on the third portion, and
• a supporting layer having a first surface, wherein
• the first surface has a first region, a second region, and a third region, the second region being disposed with a space being interposed between the first region and the second region in the first direction, the third region being disposed between the first region and the second region in the first direction,
• the electromagnetic wave detector further comprising:
• a first insulating layer disposed on the first region;
• and
• a second insulating layer disposed on the second region, wherein
• the first portion of the two-dimensional material layer and the first electrode portion are disposed on the first insulating layer,
• the second portion of the two-dimensional material layer and the second electrode portion are disposed on the second insulating layer, and
• the third portion of the two-dimensional material layer is disposed with a space being interposed between the third portion and the third region in a direction orthogonal to the first surface.
• the electromagnetic wave detector further comprising a reflective film disposed on the third region.