In this letter, a solution combustion synthesized (SCS) CeO2 -based high-performance wideband photodetector (PD) is reported. The SCS method was categorically chosen to narrow the bandgap of synthesized CeO2 via nitrogen or carbon doping and employ the higher level of oxygen vacancies in photodetection. The PD's structure is composed of p-Si/Al/CeO2 /Ag layers, where T1 and T2 are Al and Ag -based electrodes, respectively. The fabricated PD exhibits excellent photodetection capability between 350 nm to 850 nm with a peak responsivity of 12.42 A.W−1 at 411 nm. The highest measured value of external quantum efficiency (EQE) and specific detectivity ( $D^{*}$ ) of the PD are 24.65% at 401 nm and $3.57 \times 10^{10}$ Jones at 501 nm, respectively. The fabricated PD's rise and fall times are measured to be approximately 27 ms and 16 ms, respectively. An experimental application of the proposed PD through a simple visible lightwave communication (VLC) system is also shown.

In this letter, we report a hydrothermally synthesized MoSSe-based wideband photodetector (PD) offering excellent responsivity with sub-second response time. The overall device structure is MXene/MoSSe/Ag with Si as the substrate. The cathode and anode contact of the PD is fabricated with MXene (Ti ₃ C ₂ Tx) and Ag, respectively. The Ti ₃ C ₂ Tx and MoSSe layers are deposited using the spin-coating method, while the Ag electrode is deposited using the thermal evaporation technique. The fabricated PD exhibits excellent photodetection capability between 350 nm to 950 nm with a peak responsivity of 8.89 A.W ⁻¹ at 460 nm. The measured value of external quantum efficiency (EQE), and detectivity ( $D^{*}$ ) of the PD at 420 nm at 24.96% and $9.07 \times 10^{9}$ Jones, respectively. Also, the linearity measurement indicates the efficacy of the PD up to 343 K. In terms of transient performance, the measured rise and fall time of the PD are approximately 0.12 sec and 0.13 sec, respectively.

A high-performance flexible organic photodetector (OPD) with broad-spectrum capabilities utilizing a high-mobility conjugated polymer P-TZTZ is demonstrated. Using the OPD, a visible lightwave communicating link is also exhibited.