| 초록 |
For the next-generation solar cell, the energy payback is also important factor to use the renewable energy, solar light. However, unfortunately, high-energy required processes are still being used to make photosensitizers for the solar cells, such as II-IV, III-V, I-III-VI semiconductors, quantum dots (QD, synthesized through hot-injection process), polymers, and so on. To reduce the energy payback time significantly, instead of high-temperature and inert gas based synthetic procedure, we propose brand new strategy: perovskite quantum dot synthesis at room temperature in ambient condition. Through in-situ and ex-situ spectroscopic tools, we proposed the formation mechanism of the QDs made through new synthetic process. Furthermore, the intrinsic problem of perovskite – instability against to humidity/water – has been solved by coating silica. We observed the perovskite QDs@SiOx is stable in water during several weeks. |
