Pre-incorporation of Na into flexible Cu(In,Ga)Se-2 thin film solar cells

Ma, Xuhang1; Ma, Yaping1,2; Yang, Shihang3; Yang, Chunlei3; Lin, Tao1; Wang, Kedong1; Xiao, Xudong2

2018-10

10.1016/j.solener.2018.08.048

SOLAR ENERGY   影响因子和分区

0038-092X

Incorporation of sodium into the Cu(In,Ga)Se-2 (CIGS) absorber layer is a key step for the growth of high conversion efficiency CIGS solar cells. However, the doping of Na into CIGS layer on a flexible substrate, i.e. Titanium foil, is still a challenge. In this paper, we report our results on comparing two different Na pre-incorporation methods in constructing flexible CIGS solar cells on Ti substrates: i) by sputtering a soda-lime glass thin film (SLGTF) onto Ti substrates prior to the growth of CIGS and Mo back contact layers and ii) by evaporating a NaF precursor layer on the Mo layer before the CIGS growth. By carefully optimizing the growth conditions, the conversion efficiencies of 13.47% and 15.02% are achieved for the SLGTF sample and the NaF sample, respectively. The NaF precursor method shows a better effect. The diffusion of Na and the gradient of Ga play important roles in the performance of the solar cells.

Cu(In Ga)Se-2 Flexible Titanium Na doping

SCI ; EI

英语

第一 ; 通讯

STS Program of China[KFJ-SW-STS-152]

Energy & Fuels

Energy & Fuels

WOS:000452940800105

PERGAMON-ELSEVIER SCIENCE LTD

20183505756250

Lime ; Molybdenum ; Thin film solar cells ; Conversion efficiency ; Glass ; Titanium ; Semiconductor doping ; Sodium ; Sodium compounds ; Glass substrates

Energy Conversion Issues:525.5 ; Titanium and Alloys:542.3 ; Molybdenum and Alloys:543.3 ; Alkali Metals:549.1 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Inorganic Compounds:804.2 ; Glass:812.3 ; Coating Materials:813.2

ENGINEERING

Web of Science

1.Southern Univ Sci & Technol, Dept Phys, Shenzhen 518055, Peoples R China
2.Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China
3.Chinese Acad Sci, Shenzhen Inst Adv Technol, Ctr Photovolta & Solar Energy, Shenzhen 518055, Peoples R China

Ma, Xuhang,Ma, Yaping,Yang, Shihang,et al. Pre-incorporation of Na into flexible Cu(In,Ga)Se-2 thin film solar cells[J]. SOLAR ENERGY,2018,173:1080-1086.

Ma, Xuhang.,Ma, Yaping.,Yang, Shihang.,Yang, Chunlei.,Lin, Tao.,...&Xiao, Xudong.(2018).Pre-incorporation of Na into flexible Cu(In,Ga)Se-2 thin film solar cells.SOLAR ENERGY,173,1080-1086.

Ma, Xuhang,et al."Pre-incorporation of Na into flexible Cu(In,Ga)Se-2 thin film solar cells".SOLAR ENERGY 173(2018):1080-1086.