Fabrication of Imprinted Flexible Solar PV Maximum Power Point Tracking System for Smart Cities Sustainable Development

Flexible Indium Tin Oxide (ITO)-free perovskite solar cells (PVKs) with an imprinted silver nanowire (AgNW) transparent electrode are fabricated. The AgNWs were first spin-coated on flexible substrate and optimized according to the transmission and resistance. Then, the solution-processed AgNWs were transferred and imprinted on the PEN substrate which not only can improve the elastic modulus of film but also enhance the mechanical properties of the electrode. For smart cities applications, the flexible PVKs were further combined with maximum power point tracking (MPPT) algorithms. The power conversion efficiency (PCE) of flexible PVKs cells can reach around 8.0 %.