Solar cell of high-efficiency planar heterojunction perovskite structure having interface modification layer formed by [6,6]-phenyl group-C61-butyric acid (PCBA)

• Main Authors: LI CUIHONG, BAO ZHISHAN, DONG YANG, LI WENHUA
• Format: Patent
• Language: Chinese; English
• Published: 05.10.2016
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION; SEMICONDUCTOR DEVICES; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE

The present invention relates to a solar cell of a high-efficiency planar heterojunction perovskite structure having an interface modification layer formed by a [6,6]-phenyl group-C61-butyric acid (PCBA). The solar cell is characterized in that iodide perovskite ABI3 is prepared on the FTO/compact TiO2 surface of imporous TiO2, wherein A is the Pb element, and B is organic ammonium iodate CH3NH3I; a perovskite material is made from CH3NH3PbI3, NH2=CHNH3PbI3, CH3NH3SnI3, NH2=CHNH3SnI3 and the like and is good in light absorption capacity, photovoltaic conversion capacity and electron hole transporting capacity. An electron transfer layer which comprises TiO2, ZnO and the like and a hole transporting layer which comprises Spiro-OMe TAD and the like are introduced into the interface of a perovskite active layer and an electrode, so that a perovskite structure-based solar cell device can be constructed. The solar cell is simple in material compounding and low in cost. The device formed is high in stability and lo