4:45 PM - 5:00 PM
▲ [9p-S222-12] Low defect density of Perovskites films for high efficiency Perovskites solar cells
Keywords:Perovskite solar cell
Abstract
Due to energy shortage, solar cell develops an important alternative energy. Perovskite solar cells (PSCs) are expected in several kinds of solar cells. In recent years, the power conversion efficiency (PCE) of PSCs from 3.8% has rapidly increased to 23.7%. Our purpose is decreasing defect of perovskite to enhance the PCE of PSCs. First, we use thermal treatment on PVSK. Let PVSK MAPbI3 film flatter, grain size larger, and fully crystallizing between grain boundary. The PCE of PSCs from 17.36% improves to 18%. In reference, deep defect density can be easily healed by triiodide ions when PVSK phases are formed, so we addict potassium iodide and iodine to form partial triiodide ions. The Voc improves to 1.09V, FF improves to 0.777, and the PCE improves to 19.36%. We investigate the crystal structure, surface morphology, absorption, and relation between carrier transport layers.
Due to energy shortage, solar cell develops an important alternative energy. Perovskite solar cells (PSCs) are expected in several kinds of solar cells. In recent years, the power conversion efficiency (PCE) of PSCs from 3.8% has rapidly increased to 23.7%. Our purpose is decreasing defect of perovskite to enhance the PCE of PSCs. First, we use thermal treatment on PVSK. Let PVSK MAPbI3 film flatter, grain size larger, and fully crystallizing between grain boundary. The PCE of PSCs from 17.36% improves to 18%. In reference, deep defect density can be easily healed by triiodide ions when PVSK phases are formed, so we addict potassium iodide and iodine to form partial triiodide ions. The Voc improves to 1.09V, FF improves to 0.777, and the PCE improves to 19.36%. We investigate the crystal structure, surface morphology, absorption, and relation between carrier transport layers.