Doubling the power efficiency of radioluminescent batteries via tuning the optical filed

 This dataset contains the measured current density–voltage (J–V) curves and the Geant4 Monte Carlo optical simulation results supporting the article “Doubling the power efficiency of radioluminescent batteries via tuning the optical field.” J–V curves were measured for X-ray radioluminescent batteries based on a Cs₃Cu₂I₅:Tl single-crystal scintillator and a GaInP photovoltaic cell, irradiated by a tungsten target X-ray tube (Oxford, Apogee 5500) at 50 kV and 1.0 mA, for six optical configurations (control, three reflective films, an optocoupler-adhesive layer, and their combination), with three independent measurements per configuration; derived Jsc, Voc, FF, output power density and efficiency are included.

The optical simulation data quantify energy deposition, photon losses (outcoupling, self-absorption, top/side leakage), outcoupling efficiency versus adhesive refractive index, and angular lightdistribution. Simulations used Geant4 with X-ray spectra from SpekPy and measured optical parameters (Enlitech QE- R3011, Shimadzu UV-1800, FLS 980).