Supplementary Information

Controllable and Large-Scale Fabrication of Rectangular CuS Network Films

for Indium Tin Oxide- and Pt-free Flexible Dye-sensitized Solar Cells

Zijie Xua, Teng Lia, Qian Liua, Fayin Zhanga, Xiaodan Honga, Shuyao Xiea, Changxu Lina, Xiangyang Liu*ab

and Wenxi Guo*a

a Research Institute for Soft Matter and Biomimetics, Fujian Provincial Key Laboratory for Soft

Functional Materials Research, Department of Physics, Xiamen University, Xiamen, 361005,

China.

b Department of Physics, Faculty of Science, National University of Singapore, Singapore,

117542, Singapore.

E-mail: w xguo @xmu.edu.cn ；phyliuxy@nus.edu.sg.

Supplementary Figures and Videos

Figure S1. XRD pattern of TNARs on Ti foil.

Figure S2. Optical microscope image of self-formed crackle patterns.

Figure S3. Mechanism model of the formation of the rectangular TiO2 colloidal pattern.

Figure S4. The SEM image of unordered CuS networks in PET substrate.

Figure S5. Degradation curve of DSSC based on CuS TCF as CE.

Video S1. The forming process of the crackles.

Video S2. Bending test for CuS TCFs.

Video S3. Ultrasonic treatment for CuS TCF.

20 30 40 50 60 70 80

TiO2(21-1272)

Inte

nsity

(a.u

.)

2-Theta(deg.)

TiO2

Figure S1. XRD pattern of TNARs on Ti foil.

Figure S2. Optical microscope image of self-formed crackle patterns.

Figure S3. Mechanism model of the formation of the rectangular TiO2 colloidal pattern.

Figure S4. The SEM image of unordered CuS networks in PET substrate.

0 10 20 300

1

2

3

4

Time (day)

Eff

icie

ncy

(%)

CuS

Figure S5. Degradation curve of DSSC based on CuS TCF as CE.