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首页> 外文期刊>Advanced energy materials >High-Efficiency (Li_xCu_(1−x))_2ZnSn(S,Se)_4 Kesterite Solar Cells with Lithium Alloying
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High-Efficiency (Li_xCu_(1−x))_2ZnSn(S,Se)_4 Kesterite Solar Cells with Lithium Alloying

机译：锂合金化的高效（Li_xCu_（1-x））_ 2ZnSn（S，Se）_4钾长石太阳能电池

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摘要

The performance-boosting effect of alkali treatments is well known for chalcogenide thin-film solar cells based on Cu(In,Ga)Se-2 (CIGS) and Cu2ZnSn(S,Se)(4) (CZTSSe-kesterite) absorbers. In contrast to heavier alkali elements, lithium is expected to alloy with the kesterite phase leading to the solid solution (LixCu1-x)(2)ZnSn(S,Se)(4) (LCZTSSe), which offers a way of tuning the semiconductor bandgap by changing the ratio Li/(Li+Cu). Here is presented an experimental series of solution-processed LCZTSSe with lithium fraction Li/(Li+Cu) ranging from x = 0 to 0.12 in the selenized absorber as measured by means of inductively coupled plasma mass spectrometry. The proportional increase in lattice parameter a and bandgap from 1.05 to 1.18 eV confirms the lithium alloying in the kesterite phase. Increase in grain size is observed for x up to 0.07, whereas a higher lithium fraction leads to a porous absorber morphology due to an inhomogeneous distribution of Li-containing compounds in the kesterite layer. An increase of the photoluminescence quantum yield is observed as the Li fraction increases in the absorber layer. A champion device exhibits a remarkable efficiency of 11.6% (12.2% active area) for x = 0.06, close to the world record value of 12.6% demonstrating the effectiveness of lithium alloying.
机译：对于基于Cu（In，Ga）Se-2（CIGS）和Cu2ZnSn（S，Se）（4）（CZTSSe-kesterite）吸收剂的硫属化物薄膜太阳能电池，碱处理的性能提升作用是众所周知的。与较重的碱金属元素相比，锂有望与钾钛矿相形成合金，从而形成固溶体（LixCu1-x）（2）ZnSn（S，Se）（4）（LCZTSSe），这提供了一种调谐半导体的方法通过改变比率Li /（Li + Cu）来实现带隙在这里介绍了一系列的固溶LCZTSSe实验过程，其中锂组分Li /（Li + Cu）在硒化吸收剂中的锂含量范围为x = 0至0.12，通过电感耦合等离子体质谱法进行了测量。晶格参数a和带隙从1.05 eV到1.18 eV的成比例增加证实了锂钛矿相中的锂合金化。对于x直至0.07，观察到晶粒尺寸的增加，而较高的锂分数由于在锂镁橄榄石层中含锂化合物的不均匀分布而导致多孔吸收体形态。随着吸收层中Li含量的增加，观察到光致发光量子产率的增加。当x = 0.06时，冠军设备的效率高达11.6％（有效面积为12.2％），接近世界纪录的12.6％，证明了锂合金的有效性。

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  • 来源
    《Advanced energy materials》 |2018年第34期|1801191.1-1801191.8|共8页
  • 作者

    Cabas-Vidani Antonio; Haass Stefan G.; Andres Christian; Caballero Raquel; Figi Renato; Schreiner Claudia; Marquez Jose A.; Hages Charles; Unold Thomas; Bleiner Davide; Tiwari Ayodhya N.; Romanyuk Yaroslav E.;

  • 作者单位

    Empa Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland;

    Empa Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland;

    Empa Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland;

    Univ Autonoma Madrid, Dept Fis Aplicada, C Francisco Tomas & Valiente 7, E-28049 Madrid, Spain;

    Empa Swiss Fed Labs Mat Sci & Technol, Lab Adv Analyt Technol, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland;

    Empa Swiss Fed Labs Mat Sci & Technol, Lab Adv Analyt Technol, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland;

    Helmholtz Zentrum Mat & Energie GmbH, Dept Struct & Dynam Energy Mat, Hahn Meitner Pl 1, D-14109 Berlin, Germany;

    Helmholtz Zentrum Mat & Energie GmbH, Dept Struct & Dynam Energy Mat, Hahn Meitner Pl 1, D-14109 Berlin, Germany;

    Helmholtz Zentrum Mat & Energie GmbH, Dept Struct & Dynam Energy Mat, Hahn Meitner Pl 1, D-14109 Berlin, Germany;

    Empa Swiss Fed Labs Mat Sci & Technol, Lab Adv Analyt Technol, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland;

    Empa Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland;

    Empa Swiss Fed Labs Mat Sci & Technol, Lab Thin Films & Photovolta, Ueberlandstr 129, CH-8600 Dubendorf, Switzerland;

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  • 正文语种 eng
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  • 关键词

    alkali doping; CZTSe; kesterite; lithium; thin film solar cells;

    机译：碱掺杂;CZTSe;锂锰矿;锂;薄膜太阳能电池;

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