Improving the crystallization and carrier recombination of Cu2ZnSnS4 thin film deposited on Mo-coated soda-lime glass by extra sodium doping through solution process
Improving the crystallization and carrier recombination of Cu2ZnSnS4 thin film deposited on Mo-coated soda-lime glass by extra sodium doping through solution process
复制标题
通过溶液法额外钠掺杂改善镀钼钠钙玻璃上沉积的 Cu2ZnSnS4 薄膜的结晶和载流子复合
DOI：
10.1016/j.matlet.2019.07.014
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发表时间：
2019-11
影响因子：
3
通讯作者：
Lai Yanqing
中科院分区：
文献类型：
--
作者：
Tong Zhengfu;Liu Fangyang;Jiang Liangxing;Lai Yanqing
本文介绍了一种简单、温和的溶液处理方法，在镀钼的钠钙玻璃上制备了额外钠掺杂的Cu 2 ZnSnS 4（CZTS）薄膜。通过该方法，Na掺杂浓度可以在3.9%~ 5.4%范围内连续调节。通过溶液法对CZTS进行额外的Na掺杂，在不引入任何杂质相的情况下，使CZTS的晶粒尺寸明显增大。光致发光谱表明，高浓度的Na掺杂对CZTS薄膜的带隙复合有较强的抑制作用。载流子寿命从2.1 ns提高到2.83 ns。钠掺杂浓度为4.8%的CZTS薄膜太阳能电池表现出最好的性能。
In this paper an easy and mild solution-processed method is introduced to prepare extra sodium (Na) doped Cu2ZnSnS4(CZTS) films on Mo-coated soda-lime glasses. Through this method, the Na-doping concentration can be adjusted at the range from 3.9% to 5.4% continuously. By extra Na doping through solution process, the grain size of CZTS particles was enlarged apparently without introducing any impurity phase. More excitingly, the photoluminescence (PL) spectrum indicates that high Na-doping concentration has the strong suppression ability on the band-gap recombination of CZTS films. The carrier lifetime is promoted from 2.1 ns to 2.83 ns. CZTS thin film solar cell with 4.8% Na-doping concentration shows the best performance.
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