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首页> 外文会议>2018年第65回応用物理学会春季学術講演会講演予稿集 >High-performance Planar Perovskite Solar Cells Exploiting a Compact TiCh/Anatase TiO_2 Nanoparticles Electron Transport Bilayer
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High-performance Planar Perovskite Solar Cells Exploiting a Compact TiCh/Anatase TiO_2 Nanoparticles Electron Transport Bilayer

机译：高性能平面钙钛矿太阳能电池开发紧凑的TiCh /锐钛矿TiO_2纳米粒子电子传输双层

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摘要

Interface engineering plays a promising strategy to produce highly efficient planar heterojunction (PHJ) perovskite solar cells. Higher potential single-crystalline anatase titania nanoparticles (TiO2 NPs) with average diameter sizes about 6 to 10 nm, were synthesized by a novel one-step hydrothermal route using water-soluble titanium complex as a titanium source. Herein, a novel compact TiO2/Anatase TiO2 NPs bilayer was introduced as an electron transport layer (ETL) by comprising spray pyrolysis (SP) deposition and spin-coating (SC) technique, respectively, in PHJ perovskite solar cells. A SP-TiO2/SC-Anatase TiO2 NPs bilayer based perovskite solar cells are facilitated more efficient electron transport, charge extraction, and low interfacial recombination, and thus leads champion efficiencies up to 17.05% by a significant decrease of current density versus voltage (J-V) hysteresis, presenting almost12% enhancement compared to the TiO2 single layer based counterparts. The PHJ perovskite solar cells exhibited a spectral response that extended from the visible to the near-infrared region with a broad, flat absorption peak of intensity 80%-85% at approximately 380-750 nm. The higher IPCE value of the device with a bilayer in the visible-to-near-infrared wavelength region than those of the other devices suggests that the bilayer layer collect electrons more efficiently at the perovskite/TiO2 edge because it successfully lowers the interfacial energy barrier. This facial process and significant performance enhancement revealed that the resulted bilayer could be good ETL candidates for high-performance PHJ perovskite solar cells.
机译：界面工程在生产高效平面异质结（PHJ）钙钛矿太阳能电池方面起着有希望的策略。以水溶性钛配合物为钛源，采用新颖的一步水热法合成了平均粒径约6〜10 nm的高潜力单晶锐钛矿型二氧化钛纳米颗粒（TiO2 NPs）。本文中，通过在PHJ钙钛矿太阳能电池中分别包括喷雾热解（SP）沉积和旋涂（SC）技术，将新颖的紧凑型TiO2 /锐钛矿型TiO2 NPs双层膜引入电子传输层（ETL）。 SP-TiO2 / SC-Anatase TiO2 NPs双层钙钛矿太阳能电池可促进更有效的电子传输，电荷提取和低界面重组，因此通过电流密度与电压的显着降低，可将冠军效率提高到17.05％（JV磁滞，与基于TiO2单层的对应物相比，几乎提高了12％。 PHJ钙钛矿太阳能电池表现出从可见光到近红外区域的光谱响应，在大约380-750 nm处有一个强度为80％-85％的宽而平坦的吸收峰。在可见光到近红外波长区域中具有双层的器件的IPCE值高于其他器件的IPCE值，表明该双层层在钙钛矿/ TiO2边缘更有效地收集电子，因为它成功地降低了界面能垒。这种面部加工和显着的性能增强表明，所得双层可以成为高性能PHJ钙钛矿太阳能电池的良好ETL候选材料。

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