A short study of perovskite solar cells with incorporation of long persistent luminescence material.

In the concern of global climate change, issue related to energy crisis, technologies reliable on non-fossil renewable energy sources are in full demand. Solar energy appears to be one of the finest alternatives among all non-conventional energy resources because of its economic capability and environmental sustainability. Perovskite materials has great potential for application as active materials in third-generation solar cells due to their wide spectrum absorption, low excitation binding energy and long excitation diffusion length. In this work, room temperature mixed-cation perovskite material FAMAPbI₃ for perovskite solar cells (PSC) is studied. To extend the performance of the PSC samples, we have integrated a layer of organic long persistent luminescence (LPL) material in the samples. X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence (PL) spectroscopy were carried out to reveal the phase identification, morphology nature and emission spectra, respectively. Furthermore, we have proposed a new material composition of polymer electrolyte which could work as a hole-transport material. The luminescence material and its application in solar cells, and the after-glow effect are discussed. The optimized ratio of the LPL material would be used in the fabrication of laboratory scale PSC.

Acknowledgment: This work was partly supported by the AOARD grant (award no: FA2386-21-1-4106).