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InSb / GaSb / AlSb Narrow-Gap Photodetector — Band Diagram (2D)

Interactive 2D simulator of III-V antimonide (InSb, GaSb, AlSb) infrared photodetector physics: Varshni bandgap narrowing with temperature, IR cutoff wavelength, thermal dark current, and a live 2D valence/conduction band diagram with falling photon absorption events. Pan and zoom the band view.

Nanotechnology & MEMS2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

This 2D companion to the 3D lattice simulator focuses purely on the band-diagram physics of III-V antimonide (InSb, GaSb, AlSb) infrared photodetectors. The Varshni equation narrows or widens each material's bandgap with temperature, photons fall from above and are absorbed or transmitted depending on whether their energy clears that gap, and the same live readouts track cutoff wavelength, photon energy and the thermally-driven dark current that ultimately limits detector performance. Drag to pan the diagram and scroll to zoom in on the gap.

⚙ Under the hood

Interactive 2D band-diagram simulator of III-V antimonide (InSb, GaSb, AlSb) infrared photodetector physics: Varshni bandgap narrowing with temperature, IR cutoff wavelength, and thermal dark current, with falling photons absorbed or transmitted depending on whether their energy clears the live gap. Pan and zoom the band view.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install