Monolithic hole-conductor-free perovskite solar cells using TiO2 nanoparticle binding carbon films

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• 英文论文题名：Monolithic hole-conductor-free perovskite solar cells using TiO2 nanoparticle binding carbon films
• 论文作者：Fang Wan ; Xincan Qiu ; Liao Xu
• 英文论文作者：Fang Wan ; Xincan Qiu ; Liao Xu ; Institute of Super-microstructure and Ultrafast Process in Advanced Materials ; School of Physics and Electronics ; Central South University
• 年：2017
• 作者机构：Institute of Super-microstructure and Ultrafast Process in Advanced Materials, School of Physics and Electronics, Central South University;
• 英文论文关键词：perovskite solar cell ; Hole-conductor-free ; Carbon ; Monolithic ; TiO2 ; Stability
• 会议召开时间：2017-05-27
• 会议录名称：第四届新型太阳能电池学术研讨会论文集
• 英文会议录名称：Abstract Book of the 4th Conference on New Generation Solar Cells
• 语种：英文
• 分类号：TM914.4
• 学会代码：ZKYQ
• 会议名称：第四届新型太阳能电池学术研讨会
• 会议地点：中国北京
• 主办单位：中国可再生能源学会光化学专业委员会
• 学会名称：中国科学院物理研究所清洁能源实验室
• 页数：1
• 文件大小：666k
• 原文格式：D
• 会议级别：全国

摘要

Using TiO2 nanoparticles as binders, highly conductive carbon films were prepared and used to fabricate monolithic hole-conductor-free perovskite solar cell in air.Carbon films were condensed by dehydration reaction between surface hydroxyls from both TiO2 nanoparticles and carbon particles, which are beneficial for adhesion ability and conductivity of carbon film, and the formation and filling properties of perovskite crystallites in the monolithic structure of "FTO/C-TiO2/MTiO2/M-ZrO2/Carbon".A reduced sheet resistance from 10 to 2.74 ohm/sq was obtained for carbon films annealed under relatively low temperature annealing(from 150℃ to 450℃).Confined distribution of perovskite crystallites in the region containing MTiO2/M-ZrO2 layers and bottom of carbon film was obtained from 350℃ annealing, which helped to achieve upgraded power conversion efficiency from 5.40(±1.32) % to 9.21(±1.04) %(averaged, reverse scan) and 11.07%(champion, reverse scan) at testing area of ~0.18 cm2, as well as stability of 1000 h in relative high humidity environment(RH:70~90%).The air-compatible fabrication process, sound device ability as well as lowcost of carbon materials make such carbon based monolithic device structure realistic candidate for mass production of perovskite solar cells.
Using TiO2 nanoparticles as binders, highly conductive carbon films were prepared and used to fabricate monolithic hole-conductor-free perovskite solar cell in air.Carbon films were condensed by dehydration reaction between surface hydroxyls from both TiO2 nanoparticles and carbon particles, which are beneficial for adhesion ability and conductivity of carbon film, and the formation and filling properties of perovskite crystallites in the monolithic structure of "FTO/C-TiO2/MTiO2/M-ZrO2/Carbon".A reduced sheet resistance from 10 to 2.74 ohm/sq was obtained for carbon films annealed under relatively low temperature annealing(from 150℃ to 450℃).Confined distribution of perovskite crystallites in the region containing MTiO2/M-ZrO2 layers and bottom of carbon film was obtained from 350℃ annealing, which helped to achieve upgraded power conversion efficiency from 5.40(±1.32) % to 9.21(±1.04) %(averaged, reverse scan) and 11.07%(champion, reverse scan) at testing area of ~0.18 cm2, as well as stability of 1000 h in relative high humidity environment(RH:70~90%).The air-compatible fabrication process, sound device ability as well as lowcost of carbon materials make such carbon based monolithic device structure realistic candidate for mass production of perovskite solar cells.

引文

[1]Xu L,Wan F,Rong Y,et al.[J].Organic Electronics,2017,45:131-138.