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首页> 外文期刊>Advanced Functional Materials >Bifunctional SnO_2 Colloid Offers No Annealing Effect Compact Layer and Mesoporous Scaffold for Efficient Perovskite Solar Cells
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Bifunctional SnO_2 Colloid Offers No Annealing Effect Compact Layer and Mesoporous Scaffold for Efficient Perovskite Solar Cells

机译：双功能SnO_2胶体不提供高效的钙钛矿太阳能电池的退火效果紧凑型层和中孔脚手架

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摘要

SnO2 compact layer (c-SnO2) frequently suffers from degradation in high temperature processes (HTP) such as crack, worse interfacial contact, and electrical properties, that is, annealing effect. To solve this problem, a kind of bifunctional SnO2 colloid is developed by using small molecular oxalate whose organic components can be removed clearly at a low temperature process (LTP). The c-SnO2 and SnO2 mesoporous layer (m-SnO2) derived from the fresh and aged sols with the same colloid show no annealing effect, decreasing oxygen vacancy, and adsorbing water on increasing annealing temperature. The champion devices of LTP and HTP SnO2 planar perovskite solar cells (PSCs) achieve, respectively, stabilized photoelectric conversion efficiencies (PCEs) of 20.74% and 20.70%. In contrast, the performance of champion devices of their mesoporous counterparts is significantly improved, showing nearly hysteresis free character with stabilized PCEs of 22.40% and 22.37%, respectively. The inclusion of m-SnO2 plays a role of an energy bridge, improving electrons collection efficiency, which is supported by photoluminescence and transient photoluminescence characterizations. HTP SnO2 mesoporous PSCs can preserve 97.6% and 80% of their initial PCEs after aging for 25 weeks and 8-h irradiated/16-h dark cycle within 104 h. The high stability of HTP SnO2 PSCs may ascribe to low oxygen vacancy and adsorbed water of HTP SnO2.
机译：SnO2紧凑层（C-SnO2）经常患有高温过程（HTP）的降解，例如裂缝，更差的界面接触和电性能，即退火效果。为了解决这个问题，通过使用小分子草酸盐来开发一种双官能SnO2胶体，其有机组分可以在低温过程（LTP）下清楚地除去。衍生自新鲜和老溶胶的C-SnO2和SnO2介孔层（M-SnO2），其具有相同的胶体的退火效果，降低氧气空位和吸附水，增加退火温度。 LTP和HTP SnO2 Planar Perovskite太阳能电池（PSC）的冠军设备分别稳定稳定的光电转换效率（PCE），20.74％和20.70％。相比之下，其中孔对应物的冠军设备的性能显着改善，分别显示出几乎滞后性的滞后性，分别为22.40％和22.37％。包含M-SnO2起到能量桥的作用，提高了电子收集效率，这由光致发光和瞬态光致发光特征负载。在老化后，HTP SnO2中孔PSC可在25周后保持97.6％和80％的初始PCE，并在104小时内照射8小时/ 16-H暗循环。 HTP SnO2 PSCs的高稳定性可能递成HTP SnO2的低氧空位和吸附水。

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  • 来源
    《Advanced Functional Materials》 |2021年第36期|2103949.1-2103949.10|共10页
  • 作者

    Xiong Liangbin; Li Jiashuai; Ye Feihong; Wang Haibing; Guo Yaxiong; Ming Xing; Chen Qingyun; Zhang Shaoan; Xie Ruihao; Chen Zhanxu; Lv Yang; Hu Guangqi; He Yingji; Fang Guojia;

  • 作者单位

    Guangdong Polytech Normal Univ Sch Optoelect Engn Guangzhou 510665 Peoples R China;

    Wuhan Univ Lab Artificial Micro & Nanostruct Minist Educ China Sch Phys & Technol Wuhan 430072 Peoples R China;

    Wuhan Univ Lab Artificial Micro & Nanostruct Minist Educ China Sch Phys & Technol Wuhan 430072 Peoples R China;

    Wuhan Univ Lab Artificial Micro & Nanostruct Minist Educ China Sch Phys & Technol Wuhan 430072 Peoples R China;

    Huazhong Agr Univ Coll Sci Wuhan 430070 Peoples R China;

    Guilin Univ Technol Key Lab New Proc Technol Nonferrous Met & Mat Guilin 541004 Peoples R China;

    Guilin Univ Technol Key Lab New Proc Technol Nonferrous Met & Mat Guilin 541004 Peoples R China;

    Guangdong Polytech Normal Univ Sch Optoelect Engn Guangzhou 510665 Peoples R China;

    Guangdong Polytech Normal Univ Sch Optoelect Engn Guangzhou 510665 Peoples R China;

    Guangdong Polytech Normal Univ Sch Optoelect Engn Guangzhou 510665 Peoples R China;

    Guangdong Polytech Normal Univ Sch Optoelect Engn Guangzhou 510665 Peoples R China;

    Guangdong Polytech Normal Univ Sch Optoelect Engn Guangzhou 510665 Peoples R China;

    Guangdong Polytech Normal Univ Sch Optoelect Engn Guangzhou 510665 Peoples R China;

    Wuhan Univ Lab Artificial Micro & Nanostruct Minist Educ China Sch Phys & Technol Wuhan 430072 Peoples R China;

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  • 关键词

    high temperature processes; mesoporous perovskite solar cells; SnO2; compact layers; tin oxide;

    机译：高温工艺;中孔钙钛矿太阳能电池;SNO2;紧凑层;氧化锡;

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