6.5% efficient perovskite quantum-dot-sensitized solar cell
6.5% efficient perovskite quantum-dot-sensitized solar cell
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DOI：
10.1039/c1nr10867k
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发表时间：
2011-01-01
期刊：
影响因子：
6.7
通讯作者：
Park, Nam-Gyu
中科院分区：
文献类型：
--
作者：
Im, Jeong-Hyeok;Lee, Chang-Ryul;Park, Nam-Gyu
利用约2-3 nm的钙钛矿(CH(3)NH(3))PbI(3)纳米晶制备了高效的量子点敏化太阳能电池。在γ-丁内酯溶液(钙钛矿前驱体溶液)中旋涂CH(3)NH(3)I和PbI(2)的等摩尔混合物，在纳米二氧化钛(2)表面形成(CH(3)NH(3))PbI(3)量子点。通过与碘化物/碘基氧化还原电解液的电化学连接，钙钛矿型QD敏化的3.6m厚的TiO2膜在530 nm处的最大外量子效率(EQE)为78.6%，在AM 1.5g 1太阳强度(100 mW cm(-2))下的光电转换效率为6.54%，是迄今报道的最高效率的无机量子点敏化剂。
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 gamma-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 mu m-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.