Ink Method-prepared NiO Hole Transport Layers for CH3NH3PbI3 Solar cells

• 1、School of Physical Science and Technology, Southwest University,Chongqing 400715

Abstract：ICompared with organic carrier transport layer materials commonly used in organic-inorganic hybrid perovskite solar cells, inorganic carrier transport materials are cheaper, simpler to prepare, and more stable. After trying different raw materials, a stable and uniform NiO nanoparticle water-based ink was successfully obtained at low temperature, and it was used for spin-coating the NiO hole transport layer of the CH3NH3PbI3 solar cells. This solar cell exhibited a photoelectric conversion efficiency of 4.7% measured under simulated sunlight irradiation in the atmospheric environment. The water-based ink method greatly reduces the preparation cost and simplifies the preparation process of NiO films, and its low-temperature film-forming characteristics make it suitInk Method-prepared NiO Hole Transport Layers for CH3NH3PbI3 Solar cellsable for flexible PET substrates that can\'t bear the high temperature. It provides a new choice of hole transport layer material for flexible organic-inorganic hybrid perovskite photovoltaic devices.

Keywords： NiO nanoparticle ink hole transport layer organic-inorganic hybrid perovskite solar cell