溶液法制备高性能Cd掺杂Cu_2ZnSn(S,Se)_4薄膜太阳能电池
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- 英文论文题名：Solution-Processed Prepare High Performance Cd Doping Cu_2Zn Sn(S,Se)_4 Thin Film Solar Cells
- 论文作者：付杰 ; 田庆文 ; 寇东星 ; 周文辉 ; 周正基 ; 武四新
- 英文论文作者：Jie Fu ; Qingwen Tian ; Dongxin Kou ; Wenhui Zhou ; Zhengji Zhou ; Sixin 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河南省开封市金明区河南大学金明校区;
- 论文关键词：太阳能电池 ; CZTSSe ; 反位缺陷 ; 低毒溶剂 ; Cd掺杂
- 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：TM914.42
- 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：203k
- 原文格式：D
- 会议级别：全国
摘要
Cu_2ZnSn(S,Se)_4太阳能电池,因为材料中的Cu和Zn的原子半径和化学性质接近,造成体相中存在大量的反位缺陷(Cu_(Zn)和Zn_(Cu)),~([1,2])电池效率受到了很大的影响;为了减少CZTSSe中的元素混乱情况并提高电池转换效率,我们采用低毒溶剂溶解Cu,Zn,Sn的氯化物,并用部分Cd取代部分Zn。由于Cd的原子半径比Cu的大很多,很难占据Cu的点阵位置,这样就抑制了CZTSSe薄膜中的元素反位缺陷。~([3,4])此外,实验表明合适的Cd掺杂量还能提高薄膜的结晶性,减少小粒子层厚度,从而降低了串联电阻。我们通过一系列实验,最终找到了最合适的Cd掺杂量,得到了8.11%的太阳能电池效率。
Because of Cu and Zinc atomic radius and chemical properties is approach, the conversion efficiency of Cu_2ZnSn(S,Se)_4 solar cell is widely limited by antisite defect between Cu and Zinc sites. To improve the conversion property of CZTSSe solar cell, we introduce Cadmium into CZTSSe to substitute Zn partially to constitute Cu_2Zn_(1-x)Cd_xSn(S.Se)_4 by a versatile and environmentally friendly solution method. The antisite defect in thin film is evident restrained while Cd atomic radii is much larger than Cu. The Rs of solar cells is decreased because crystal property of thin film is improved with appropriate Cd content. The PCE of device is enhanced from 5.4% to 8.11% with opportune ratio of Zn/Cd.
Because of Cu and Zinc atomic radius and chemical properties is approach, the conversion efficiency of Cu_2ZnSn(S,Se)_4 solar cell is widely limited by antisite defect between Cu and Zinc sites. To improve the conversion property of CZTSSe solar cell, we introduce Cadmium into CZTSSe to substitute Zn partially to constitute Cu_2Zn_(1-x)Cd_xSn(S.Se)_4 by a versatile and environmentally friendly solution method. The antisite defect in thin film is evident restrained while Cd atomic radii is much larger than Cu. The Rs of solar cells is decreased because crystal property of thin film is improved with appropriate Cd content. The PCE of device is enhanced from 5.4% to 8.11% with opportune ratio of Zn/Cd.
引文
[1]Paris,M.;Choubrac,L.;Lafond,A.;Guillot-Deudon,C.;Jobic,S.,Inorg.Chem.2014,53:8646.
[2]Sardashti,K.;Haight,R.;Gokmen,T.;Wang,W.;Chang,L.-Y.;Mitzi,D.B.;Kummel,A.C.,Adv.Energy Mater.2015,5:2180.
[3]Zhao,W.;Wang,G.;Tian,Q.;Huang,L.;Gao,S.;Pan,D.,Solar Energy Mater.Solar Cells 2015,133:15.
[4]Su,Z.H.;Tan,J.M.R.;Li,X.L.;Zeng,X.;Batabyal,S.K.;Wong,L.H.,Adv.Energy Mater.2015,5:682.
[2]Sardashti,K.;Haight,R.;Gokmen,T.;Wang,W.;Chang,L.-Y.;Mitzi,D.B.;Kummel,A.C.,Adv.Energy Mater.2015,5:2180.
[3]Zhao,W.;Wang,G.;Tian,Q.;Huang,L.;Gao,S.;Pan,D.,Solar Energy Mater.Solar Cells 2015,133:15.
[4]Su,Z.H.;Tan,J.M.R.;Li,X.L.;Zeng,X.;Batabyal,S.K.;Wong,L.H.,Adv.Energy Mater.2015,5:682.