一维TiO_2纳米阵列在铜锌锡硫量子点太阳电池中的应用
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- 英文论文题名：One dimensional TiO_2 nanorod arrays for Cu_2ZnSnS_4 quantum dot solar cells
- 论文作者：周正基 ; 武四新
- 英文论文作者：Zheng-Ji Zhou ; Si-Xin Wu ; The Key Laboratory for Special Functional Materials of MOE ; Henan University
- 年：2016
- 作者机构：河南大学特种功能材料重点实验室;
- 论文关键词：TiO2纳米阵列 ; CZTS量子点 ; 太阳电池
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第四十二分会：能源纳米材料物理化学
- 语种：中文
- 分类号：TM914.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第四十二分会 ; 能源纳米材料物理化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：318k
- 原文格式：D
- 会议级别：全国
摘要
Cu_2ZnSnS_4(CTZS)四元半导体化合物具有与太阳光谱非常匹配的禁带宽度,较高的光吸收系数,组成元素在地壳中含量丰富以及化学性能稳定且对环境友好等优点,被认为是一种非常具有发展前途的太阳电池材料[1]。CTZS量子点具有类似溶液的可操作性,可以非常方便的整合到各种结构类型太阳电池器件中。传统薄膜太阳电池的结构特点使它们普遍存在一个光子吸收效率和电荷收集效率相互制约的矛盾,限制了电池光电转换效率的提高[2]。我们利用不同结构的一维有序TiO_2纳米阵列电极作为电子收集电极,无机配体修饰的CTZS量子点作为光活性吸收层,构筑新型结构的量子点太阳能光伏器件。通过对TiO_2纳米线阵列长度,CTZS量子点薄膜厚度和表面配体的优化,改善CTZS量子点太阳电池的激子分离和传输效率,提高电池的光电转换效率。
Cu_2ZnSnS_4(CZTS) is perceived as a promising material for application in efficient, low-cost photovoltaic technology. Herein, a novel nanoscale bulk heterojunction architecture has been developed, in which one dimensional TiO_2 nanorod arrays were used as electron-accepting electrode while the inorganic ligand capped CZTS quantum dots were deposited as the electron donor. The new photovoltaic device architecture allowed the incorporation of more quantum dots material for more complete light absorption while maintaining efficient photogenerated carrier extraction, ultimately, a remarkable energy conversion efficiency improvement was achieved.
Cu_2ZnSnS_4(CZTS) is perceived as a promising material for application in efficient, low-cost photovoltaic technology. Herein, a novel nanoscale bulk heterojunction architecture has been developed, in which one dimensional TiO_2 nanorod arrays were used as electron-accepting electrode while the inorganic ligand capped CZTS quantum dots were deposited as the electron donor. The new photovoltaic device architecture allowed the incorporation of more quantum dots material for more complete light absorption while maintaining efficient photogenerated carrier extraction, ultimately, a remarkable energy conversion efficiency improvement was achieved.
引文
[1]B.Shin,O.Gunawan,Y.Zhu,N.A.Bojarczuk,S.J.Chey,S.Guha,Prog.Photovoltaics:Res.Appl.2013,21,72.
[2]Z.Ning,Y.Ren,S.Hoogland,O.Voznyy,L.Levina,P.Stadler,X.Lan,D.Zhitomirsky,E.H.Sargent,Adv.Mater.2012,24,6295-6299.
[2]Z.Ning,Y.Ren,S.Hoogland,O.Voznyy,L.Levina,P.Stadler,X.Lan,D.Zhitomirsky,E.H.Sargent,Adv.Mater.2012,24,6295-6299.