20‐mm‐Large Single‐Crystalline Formamidinium‐Perovskite Wafer for Mass Production of Integrated Photodetectors

Abstract

CH3NH3PbX3 (MAPbX3)‐based perovskite has attracted tremendous research efforts in the last few years. With the discovery that the HC(NH2)2PbI3 (FAPbI3) perovskite offers even higher solar cell efficiency, better thermal stability, and broader optical absorption, it is expected that it will provide more excitement in optoelectronic applications including laser, LED, photodetector, etc. The development in preparing large Single‐Crystalline Formamidinium‐Perovskite FAPbI3 using the inverse‐temperature reactive crystallization process, and associated wafer‐slicing process is presented. The availability of the large Single‐Crystalline Formamidinium‐Perovskite Wafer makes it possible to fabricate integrated circuits. An array of 153 photodetectors on a piece of thin wafer, demonstrating feasibility of mass production of integrated circuits on the perovskite wafer is designed and prepared. It is found that the wafer‐based photodetector shows much superior performance, with 90 times higher photoresponse and broader optical absorption than its thin‐film perovskite counterpart.

Progress in organic-inorganic hybrid halide perovskite single crystal: growth techniques and applications

“…Such low trap density and high carrier mobility indicate that the wafer-sized large single-crystalline MAPbX3 (X = Cl, Br, I) is a promising material for high-performance optoelectronic devices. Recently, the same group demonstrated that large-sized (20 mm) FAPbI3 single crystals could also be attained by using the similar technique [59]. Most recently, they reported the growth of mixed halide perovskites MAPb(BrxI1−x)3 (x = 0-1) single crystals as shown in Fig.…”

Hybrid Perovskites: Effective Crystal Growth for Optoelectronic Applications

“…[205][206][207] From the perspective of perovskite light emitter, considerable progress in the perovskite light Putting the dramatic evolution of perovskite optoelectronics on hold, enormous efforts are still necessary for the realization of practical perovskite optoelectronic devices in our real-world.…”

In Situ Growth of 120 cm2 CH3NH3PbBr3 Perovskite Crystal Film on FTO Glass for Narrowband‐Photodetectors

“…[39] All of the measurements were performed at room temperature. The crystalline structure was examined by HRTEM (FEI, Tecnai G2 F30).…”