title: 6.5% efficient perovskite quantum-dot-sensitized solar cell.
abstract: Highly efficient quantum-dot-sensitized solar cell is fabricated using ca. 2-3 nm sized perovskite (CH(3)NH(3))PbI(3) nanocrystal. Spin-coating of the equimolar mixture of CH(3)NH(3)I and PbI(2) in γ-butyrolactone solution (perovskite precursor solution) leads to (CH(3)NH(3))PbI(3) quantum dots (QDs) on nanocrystalline TiO(2) surface. By electrochemical junction with iodide/iodine based redox electrolyte, perovskite QD-sensitized 3.6 μm-thick TiO(2) film shows maximum external quantum efficiency (EQE) of 78.6% at 530 nm and solar-to-electrical conversion efficiency of 6.54% at AM 1.5G 1 sun intensity (100 mW cm(-2)), which is by far the highest efficiency among the reported inorganic quantum dot sensitizers.
authors: School of Chemical Engineering and Department of Energy Science, Sungkyunkwan University, Suwon 440-746, Korea.
authors: Jeong-Hyeok
authors: JH
authors: Im
authors: Chang-Ryul
authors: CR
authors: Lee
authors: Jin-Wook
authors: JW
authors: Lee
authors: Sang-Won
authors: SW
authors: Park
authors: Nam-Gyu
authors: NG
authors: Park
mesh_terms: D017610:Calcium Compounds / Q000737:chemistry*; D004396:Coloring Agents / Q000737:chemistry; D055664:Electrochemical Techniques; D007455:Iodine / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry / Q000648:ultrastructure; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D010316:Particle Size; D045663:Quantum Dots; D012993:Solar Energy; D014025:Titanium / Q000737:chemistry*
chemical_list: D017610:Calcium Compounds; D004396:Coloring Agents; D010087:Oxides; C059910:perovskite; D007455:Iodine; D014025:Titanium