A potential alternative deposition technology for CdS buffer layer in kesterite solar cells via intermittent photochemical deposition

Feng，Jingjie1,2; Ma，Xuhang3; Liao，Jun1; Shao，Lexi1; Xue，Shuwen1; Wang，Zhiguo4; Zhang，Jun1

2020-10-15

10.1016/j.apsusc.2020.146911

APPLIED SURFACE SCIENCE   影响因子和分区

0169-4332

1873-5584

In this work, we have developed a novel intermittent photochemical deposition (IPCD) method to prepare CdS buffer layer on CuZnSn(S,Se) (CZTSSe) absorber. Results show that the optimized IPCD-CdS buffer layer is compact and uniform, ensuring a perfect contact with the CZTSSe absorber. Our experiments confirm that CdS can nucleate and grow on conducting substrates via IPCD method with controllable particle sizes. Based on the analyses, an electron assisted deposition mechanism is proposed to give a comprehensive insight into the IPCD process. Furthermore, the assembled CZTSSe solar cells with CdS layers deposited via IPCD deliver a highest photoelectric conversion efficiency (PCE) of 5.82%, which is improved by 22% compared to the ones with CdS layers via continuous PCD. Further analyses suggest that the efficiency improvement could be attributed to the improved band alignment at the heterojunction interface between CdS and CZTSSe layers. Our research provides a new way to improve the PCE for CZTSSe based solar cells via optimized deposition process.

CdS thin films Electron assisted growth Heterojunction interface Intermittent photochemical deposition Kesterite solar cells

SCI ; EI

英语

其他

National Natural Science Foundation of China[61674073] ; Science and Technology Planning Project of Guangdong Province[2017A050506056] ; Key Basic and Applied Research Project of Guangdong Province[2016KZDXM021] ; Hongkong, Macao & Taiwan Science and Technology Cooperation Innovation Platform in Universities in Guangdong Province[2015KGJHZ028]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000564202400005

ELSEVIER

20202408811356

Deposition ; Photoelectricity ; Cadmium sulfide ; Heterojunctions ; Tin compounds ; Copper compounds ; Open circuit voltage ; Particle size analysis ; Cadmium sulfide solar cells ; Conversion efficiency ; Selenium compounds ; II-VI semiconductors ; Thin film solar cells

Energy Conversion Issues:525.5 ; Electricity: Basic Concepts and Phenomena:701.1 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Semiconductor Devices and Integrated Circuits:714.2 ; Light/Optics:741.1 ; Chemical Operations:802.3 ; Chemical Products Generally:804 ; Crystalline Solids:933.1 ; Materials Science:951

MATERIALS SCIENCE

2-s2.0-85086066758

Scopus

1.School of Physical Science and Technology,Lingnan Normal University,Zhanjiang,29 Cunjin Road,524048,China
2.School of Physics,South China University of Technology,Guangzhou,381 Wushan Road,510640,China
3.Materials Characterization and Preparation Center,Southern University of Science and Technology,Shenzhen,1088 Xueyuan Road,518055,China
4.Department of Applied Physics,University of Electronic Science and Technology of China,Chengdu,610054,China

Feng，Jingjie,Ma，Xuhang,Liao，Jun,et al. A potential alternative deposition technology for CdS buffer layer in kesterite solar cells via intermittent photochemical deposition[J]. APPLIED SURFACE SCIENCE,2020,527.

Feng，Jingjie.,Ma，Xuhang.,Liao，Jun.,Shao，Lexi.,Xue，Shuwen.,...&Zhang，Jun.(2020).A potential alternative deposition technology for CdS buffer layer in kesterite solar cells via intermittent photochemical deposition.APPLIED SURFACE SCIENCE,527.

Feng，Jingjie,et al."A potential alternative deposition technology for CdS buffer layer in kesterite solar cells via intermittent photochemical deposition".APPLIED SURFACE SCIENCE 527(2020).