Balancing Power Harvesting and Data Reception in Inverted Perovskite SLIPT Receivers

Simultaneous light and information-power transfer (SLIPT) offer a route to self-powered optical access networks, yet solar cell-based receivers typically face a fundamental trade-off between efficient power harvesting and high-speed data reception. Here we demonstrate inverted perovskite SLIPT receivers that sustain high-speed visible-light communication while operating directly at the electrical maximum power point. By tailoring the hole-transport layer and its interface with the perovskite absorber, we independently tune recombination dynamics and the device RC response, enabling data transmission close to optimal photovoltaic bias. Interface optimisation suppresses parasitic capacitance and contact resistance while preserving a high open-circuit voltage, thereby maintaining strong power-conversion efficiency alongside MHz-scale bandwidths (-3dB bandwidth of ~ 4.5 MHz). In a proof-of-concept SLIPT link, the optimised devices deliver stable data transmission (> 40 Mbps) while harvesting a large fraction of the maximum available electrical power (~ 500 µW), placing them among the fastest perovskite-SLIPT devices reported to date. These results establish interface-engineered inverted perovskites as a viable platform for power-efficient, high-speed SLIPT and provide general design rules for concurrent optical energy harvesting and data reception.