Electronic Supplementary information (ESI)

Amorphous Electron Donors with Controllable Morphology for Non-fullerene

Polymer Solar cells

Nergui Uranbileg,a,b Chenglin Gao,a,c Chunming Yang,d Xichang Bao,a Liangliang

Hana,*, and Renqiang Yang a,*

a. CAS Key Laboratory of Bio-based Materials, Qingdao Institute of Bioenergy and

Bioprocess Technology, Chinese Academy of Sciences, Qingdao 266101, China.

Email: hanll@qibebt.ac.cn, yangrq@qibebt.ac.cn

b. Center of Materials Science and Optoelectronics Engineering, University of Chinese

Academy of Sciences, Beijing 100049, China.

c. College of Materials Science and Engineering, Qingdao University of Science and

Technology, Qingdao 266042, China.

d. Shanghai Synchrotron Radiation Facility, Shanghai Advanced Research Institute,

Chinese Academy of Sciences, Shanghai 201204, China.

Electronic Supplementary Material (ESI) for Journal of Materials Chemistry C.This journal is © The Royal Society of Chemistry 2019

Figure S1. GPC chromatograms of PBDD-CH (a) and PBDD-CH-S (b) carried out in

1,2,4-trichlorobenzene at a column temperature of 150 °C.

Figure S2. UV–vis absorption spectra for PBDD-CH and PBDD-CH-S in their pristine films.

Figure S3. The ground-state geometries of BBDT-BDD repeated units (C: red, S: yellow, H: purple. To simplify the calculation, only one repeating unit of each polymer was subjected to the calculation, and 2-ethylhexyl was replaced by CH3 groups).

Figure S4. J–(Vapp–Vbi–Vs) characteristics for PBDD-CH:ITIC and PBDD-CH-S:ITIC

based devices.

Figure S5. 2D–GIWAXS patterns for PBDD-CH:ITIC and PBDD-CH-S:ITIC

blending films.

Structure characterization of the monomers and polymers.

Figure S6. 1HNMR spectra for BDD-CH.

Figure S7. 13CNMR spectra for BDD-CH.

Figure S8. 1HNMR spectra for monomer DBrBDD-CH.

Figure S9. 13CNMR spectra for monomer DBrBDD-CH.

Figure S10. 1HNMR spectra for PBDD-CH.

Figure S11. 1HNMR spectra for PBDD-CH-S.

956.19961

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Figure S12. HRMS for monomer DBrBDD-CH.