A MSM 2D Ruddlesden Popper perovskite photodetector for visible light communication

Two dimensional Ruddlesden Popper Perovskite (RPP) has attracted optoelectronic research groups in recent years because of their photoabsorption coefficient as high as 3D counter parts while they are much more stable and durable. In this work, a metal-semiconductor-metal photodetector was fabricated. The metals were aluminum and the semiconductor was (BA)
₂
PbI
₄
. Photoresponsivity and detectivity of this device were 2.16mA/W and 1.6 × 10
⁹
jones respectively. Its fall time and rise time were 1.25 and 3 ms. The results showed that this device can be used in fast visible light communication (VLC) systems.