Development of organic-inorganic halide perovskites (OHPs) based memristors

Abstract

Organic - inorganic halide perovskite (OHP) has drawn researchers' attention working in the field of optoelectronics from last ten years due to its remarkable optical properties such as adjustable band gap, ambipolar charge transport, high optical absorption coefficients, and extended carrier diffusion lengths. OHP based memristors (memory + resistors) are a newly introduced passive two-terminal, nonlinear device used for information storage. In this work we have fabricated methyl ammonium lead iodide (MAPbI3) crystals-based device from MAPbI3 crystals. The crystals have been developed by simple solution process-based method. Developed crystals have shown highly porous geometry and trap charges across these pores facilitates higher conductivity. The fabricated device exhibits ~2.7 milli second response recovery time, which enabled elevated speed and showed hysteresis in the I-V characteristics thus demonstrating superior storage capacities. Hence, the developed device has been potential tool for next-generation non-volatile memories.