Synergistic combination of TiO2-sol interconnecting-modified photoanode with alginate hydrogel-assisted electrolyte for quantum dots sensitized solar cells
Synergistic combination of TiO2-sol interconnecting-modified photoanode with alginate hydrogel-assisted electrolyte for quantum dots sensitized solar cells
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TiO2-溶胶互连修饰光阳极与海藻酸盐水凝胶辅助电解质的协同组合用于量子点敏化太阳能电池
DOI：
10.1016/j.solener.2020.12.049
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发表时间：
2021-02
期刊：
影响因子：
6.7
通讯作者：
Tang Jianguo
中科院分区：
文献类型：
--
作者：
Du Zhonglin;Chen Ming;Yin Feifei;Jiang Haoyang;Wang Jiuxing;Tang Jianguo
构建高效、稳定的准固态甚至固态器件是量子点敏化太阳能电池的重要发展方向之一。在此，高效和稳定的准固态（QS）-QDSC器件的制备通过协同结合的TiO 2溶胶互连改性的光阳极与海藻酸盐水凝胶（AH）辅助电解质薄膜。TiO 2-溶胶结合剂可以进入到TiO 2颗粒的表面和空隙中，增加了负载量子点的比表面积和粗糙度，并使相邻颗粒之间的连接更好。同时，AH辅助的QS电解质膜具有交联的水凝胶网络结构，与改性后的TiO 2表面具有良好的界面接触，从而增强了多硫化物对的离子传输和氧化还原反应。得益于TiO 2溶胶修饰的光阳极和藻酸盐水凝胶（AH）辅助的电解质的协同效应，基于ZnCuInSe（ZCISe）的模型QS-QDSC实现了8.87%的冠军功率转换效率（PCE），与基于原始器件的器件（8.01%）相比提高了近10%，并且非常接近于液结QDSC（9.06%）。此外，所构建的QS-QDSC器件表现出优异的稳定性。因此，这项工作提供了一个简单而有效的策略，以实现QS-QDSC器件具有高效率和良好的稳定性。
Constructing the highly efficient and stable quasi-solid-state even solid-state devices is one of the most significant tendency in the field of quantum dots sensitized solar cells (QDSCs). Herein, highly efficient and stable quasi-solid-state (QS)-QDSCs devices were fabricatedviasynergistically combining the TiO2-sol interconnecting-modified photoanodes with alginate hydrogel (AH)-assisted electrolyte films. TiO2-sol binding agent could incorporate into the surface and voids of TiO2particles, which increased the surface area and roughness for QDs loading and induced better connection between the neighboring particles. Meanwhile, the AH-assisted QS-electrolyte films possessed the crosslinking hydrogel network structure and exhibited the perfect interfacial contact with the modified TiO2surface, thus enhancing the ion transport and redox reaction of polysulfide couple. Benefited from the synergistic effect of TiO2-sol modified photoanodes and alginate hydrogel (AH)-assisted electrolytes, a champion power conversion efficiency (PCE) of 8.87% for model ZnCuInSe (ZCISe) based QS-QDSCs was achieved with an enhancement of near 10% related to that of the devices based the pristine devices (8.01%), and very close to that of liquid-junction QDSCs (9.06%). Moreover, the constructed QS-QDSCs devices exhibit the excellent stability. This work thus provides a facile and effective strategy to achieve the QS-QDSCs devices with both of high efficiency and good stability.
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影响因子：
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作者：
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