In the 21st century, the applications of wearable devices are already extended beyond the scope of predicting gambling results. In practice, it has been widely applied in various fields like defense, fitness and more. However, the power supply is still a problem for the wearable device. In that case, it is necessary to develop an advanced power source for the wearable device. Perovskite solar cell has potentially become a promising power source for the flexible device. This research tried to introduce a new process for depositing perovskite solar cells on the flexible substrate.