Monodispersed SnO2 microspheres aggregated by tunable building units as effective photoelectrodes in solar cells
Monodispersed SnO2 microspheres aggregated by tunable building units as effective photoelectrodes in solar cells
复制标题
由可调结构单元聚集的单分散 SnO2 微球作为太阳能电池中的有效光电极
DOI：
10.1016/j.apsusc.2018.09.002
复制
发表时间：
2019-01
影响因子：
6.7
通讯作者：
Jingli Xu
中科院分区：
文献类型：
--
作者：
Xiaokun Zhang;Yichuan Rui;Jingxia Yang;Linlin Wang;Yuanqiang Wang;Jingli Xu
由致密堆积的纳米晶结构单元组装而成的介孔SnO2微球是一类有用的纳米材料，具有广泛的光电子学应用，但到目前为止，获得单分散微球仍然是一个挑战。本文采用无表面活性剂溶剂热法合成了由聚集的小尺寸初级纳米晶组成的单分散SnO2微球。这些SnO2微球具有高的比表面积、优异的结晶度和可调的结构单元。通过精确控制成核和生长，得到的微球具有较窄的粒径分布，从正丙醇和正丙醇/水混合溶剂中得到的微球直径分别为2 0 0 ± 17和191 ± 16 nm。随着外加水量的增加，初生纳米晶的尺寸略有增大。SnO2微球具有较大的比表面积，在染料敏化太阳能电池和钙钛矿型太阳能电池中都能有效地负载敏化剂。由于其光散射能力，亚微米级的微球还可以增强太阳能电池的光收集能力。由于初生纳米晶与邻近的颗粒密集接触，这种共生将改善电子通过晶界的传输。当SnO2微球作为散射层时，其功率转换效率为3.83%，而作为电子传输层时，其功率转换效率为15.41%。
Mesoporous SnO2microspheres assembled from densely-packed nanocrystalline building units are a class of useful nanomaterials and have extensive optoelectronic applications, but so far it is still a challenge to acquire monodispersed microspheres. Here, monodispersed SnO2microspheres consisted of aggregated small primary nanocrystallites are synthesized via a surfactant-free solvothermal method. These SnO2microspheres have high specific surface area, excellent crystallinity and tunable building units. By precisely controlling the nucleation and growth, the obtained microspheres exhibit narrow size distribution, whose diameters are 200 ± 17 and 191 ± 16 nm from pure n-propanol and n-propanol/water mixed solvents, respectively. The sizes of primary nanocrystals slightly increase with the adscititious water. The SnO2microspheres exhibit large specific surface areas, leading to efficient sensitizer-loading in both dye-sensitized solar cells (DSSCs) and perovskite solar cells (PSCs). The sub-micron-sized microspheres could also enhance the light-harvesting of the solar cells due to their light-scattering capability. As the primary nanocrystal multiply contacts densely to neighbouring grains, such intergrowth would improve the electron transport through the grain boundaries. Eventually, a power conversion efficiency of 3.83% is yielded for pure SnO2-based DSSCs when the SnO2microspheres are used as the scattering layers, and an efficiency of 15.41% is obtained when they are used as the electron transport layers in PSCs.
登录
查看更多内容
独特的掺锌 SnO2 纳米海胆具有优异的电子传输和光捕获性能，可作为高性能染料敏化太阳能电池的光阳极材料
影响因子：
3.1
作者：
Li, Zhengdao;Zhou, Yong;Zou, Zhigang
通讯作者：
Zou, Zhigang
影响因子：
3.1
作者：
Y. Rui;Yaogang Li;Qinghong Zhang;Hongzhi Wang
通讯作者：
Y. Rui;Yaogang Li;Qinghong Zhang;Hongzhi Wang
TiO2 亚微球薄膜作为高效钙钛矿太阳能电池的支架层
影响因子：
9.5
作者：
Huang, Yang;Zhu, Jun;Dai, Songyuan
通讯作者：
Dai, Songyuan
影响因子：
4.6
作者：
Guangcheng Xi;Jinhua Ye
通讯作者：
Guangcheng Xi;Jinhua Ye
影响因子：
6.7
作者：
Y. Rui;Linlin Wang;Jiachang Zhao;Hongzhi Wang;Yaogang Li;Qinghong Zhang;Jingli Xu
通讯作者：
Y. Rui;Linlin Wang;Jiachang Zhao;Hongzhi Wang;Yaogang Li;Qinghong Zhang;Jingli Xu