中国物理B ›› 2018, Vol. 27 ›› Issue (1): 18806-018806.doi: 10.1088/1674-1056/27/1/018806

所属专题: TOPICAL REVIEW — New generation solar cells

• SPECIAL TOPIC—Non-equilibrium phenomena in soft matters • 上一篇    下一篇

Theoretical study on the kesterite solar cells based on Cu2ZnSn(S,Se)4 and related photovoltaic semiconductors

Dingrong Liu(刘定荣), Dan Han(韩丹), Menglin Huang(黄梦麟), Xian Zhang(张弦), Tao Zhang(张涛), Chenmin Dai(戴称民), Shiyou Chen(陈时友)   

  1. 1 Key Laboratory of Polar Materials and Devices(MOE), East China Normal University, Shanghai 200241, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • 收稿日期:2017-10-16 修回日期:2017-11-17 出版日期:2018-01-05 发布日期:2018-01-05
  • 通讯作者: Shiyou Chen E-mail:chensy@ee.ecnu.edu.cn
  • 基金资助:

    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFB0700700), the National Natural Science Foundation of China (Grant Nos. 61574059 and 61722402), Shu-Guang Program, China (Grant No. 15SG20), and CC of ECNU, China.

Theoretical study on the kesterite solar cells based on Cu2ZnSn(S,Se)4 and related photovoltaic semiconductors

Dingrong Liu(刘定荣)1, Dan Han(韩丹)1, Menglin Huang(黄梦麟)1, Xian Zhang(张弦)1, Tao Zhang(张涛)1, Chenmin Dai(戴称民)1, Shiyou Chen(陈时友)1,2   

  1. 1 Key Laboratory of Polar Materials and Devices(MOE), East China Normal University, Shanghai 200241, China;
    2 Collaborative Innovation Center of Extreme Optics, Shanxi University, Taiyuan 030006, China
  • Received:2017-10-16 Revised:2017-11-17 Online:2018-01-05 Published:2018-01-05
  • Contact: Shiyou Chen E-mail:chensy@ee.ecnu.edu.cn
  • Supported by:

    Project supported by the National Key Research and Development Program of China (Grant No. 2016YFB0700700), the National Natural Science Foundation of China (Grant Nos. 61574059 and 61722402), Shu-Guang Program, China (Grant No. 15SG20), and CC of ECNU, China.

摘要:

The kesterite thin film solar cells based on the quaternary Cu2ZnSnS4 and Cu2ZnSnSe4 and their alloys Cu2ZnSn(S,Se)4 have been considered as environment-friendly and non-toxic alternatives to the currently commercialized CdTe and Cu(In,Ga)Se2 thin film solar cells. From the theoretical point of view, we will review how the group I2-Ⅱ-IV-VI4 quaternary compound semiconductors are derived from the binary CdTe and the ternary CuInSe2 or CuGaSe2 through the cation mutation, and how the crystal structure and electronic band structure evolve as the component elements change. The increased structural and chemical freedom in these quaternary semiconductors opens up new possibility for the tailoring of material properties and design of new light-absorber semiconductors. However, the increased freedom also makes the development of high-efficiency solar cells more challenging because much more intrinsic point defects, secondary phases, surfaces, and grain-boundaries can exist in the thin films and influence the photovoltaic performance in a way different from that in the conventional CdTe and Cu(In,Ga)Se2 solar cells. The experimental characterization of the properties of defects, secondary phase, and grain-boundaries is currently not very efficient and direct, especially for these quaternary compounds. First-principles calculations have been successfully used in the past decade for studying these properties. Here we will review the theoretical progress in the study of the mixed-cation and mixed-anion alloys of the group I2-Ⅱ-IV-VI4 semiconductors, defects, alkaline dopants, and grain boundaries, which provided very important information for the optimization of the kesterite solar cell performance.

关键词: kesterite thin film solar cells, Cu2ZnSnS4 and Cu2ZnSnSe4, first-principles calculations, defects and dopants

Abstract:

The kesterite thin film solar cells based on the quaternary Cu2ZnSnS4 and Cu2ZnSnSe4 and their alloys Cu2ZnSn(S,Se)4 have been considered as environment-friendly and non-toxic alternatives to the currently commercialized CdTe and Cu(In,Ga)Se2 thin film solar cells. From the theoretical point of view, we will review how the group I2-Ⅱ-IV-VI4 quaternary compound semiconductors are derived from the binary CdTe and the ternary CuInSe2 or CuGaSe2 through the cation mutation, and how the crystal structure and electronic band structure evolve as the component elements change. The increased structural and chemical freedom in these quaternary semiconductors opens up new possibility for the tailoring of material properties and design of new light-absorber semiconductors. However, the increased freedom also makes the development of high-efficiency solar cells more challenging because much more intrinsic point defects, secondary phases, surfaces, and grain-boundaries can exist in the thin films and influence the photovoltaic performance in a way different from that in the conventional CdTe and Cu(In,Ga)Se2 solar cells. The experimental characterization of the properties of defects, secondary phase, and grain-boundaries is currently not very efficient and direct, especially for these quaternary compounds. First-principles calculations have been successfully used in the past decade for studying these properties. Here we will review the theoretical progress in the study of the mixed-cation and mixed-anion alloys of the group I2-Ⅱ-IV-VI4 semiconductors, defects, alkaline dopants, and grain boundaries, which provided very important information for the optimization of the kesterite solar cell performance.

Key words: kesterite thin film solar cells, Cu2ZnSnS4 and Cu2ZnSnSe4, first-principles calculations, defects and dopants

中图分类号:  (Solar cells (photovoltaics))

  • 88.40.H-
71.20.Nr (Semiconductor compounds) 61.50.Ah (Theory of crystal structure, crystal symmetry; calculations and modeling) 71.20.-b (Electron density of states and band structure of crystalline solids)