New Thin-film Solar Cells: Flexible Design and Printing Manufacturing

As the representative of new thin-film solar cells, the photoelectric conversion efficiency of organic/perovskite solar cells has achieved a great breakthrough in the last decade. At the same time, due to its light-weight, flexibility and low-cost printable preparation by solution process, the new thin-film solar cells also show potential for flexible devices. Combined with other functional flexible electronic devices, the integrated design can meet people's growing living needs for portable mobile power and wearable devices. In recent years, the author's research team focused on the key scientific and technical issues of integrated design and printing of flexible thin-film solar cells, mainly aiming at the problems of the fragility of devices and the poor reproducibility of flexible printing morphology, carried out systematic research and obtained a series of innovative achievements. In this feature article, the design of flexible transparent electrode, the engineering control of flexible interface, the design of flexible toughening of active layer for photoelectric conversion and the strategy of large-area flexible printing are discussed, and the development of flexible thin-film solar cell modules is prospected. [GRAPHICS] .