Water based spray pyrolysis of metal-oxide solutions for Cu2ZnSn(S,Se)4 solar cells using low toxicity amine/thiol complexants

THIN SOLID FILMS

卷:669

Article; Proceedings Paper

Wright, L. D.¹  Lowe, J. C.^1,2  Bliss, M.¹  Tsai, V.¹  Togay, M.¹  Betts, T. R.¹  Walls, J. M.¹  Malkov, A. V.²  Bowers, J. W.¹ 

[1] Loughborough Univ, Wolfson Sch Mech Elect & Mfg Engn, Ctr Renewable Energy Syst Technol, Loughborough LE11 3TU, Leics, England

[2] Loughborough Univ, Sch Sci, Dept Chem, Loughborough LE11 3TU, Leics, England

关键词: Kesterite;    Ultrasonic;    Spray;    Water based;    Metal-oxide;    Low toxicity;    Amine;    Thiol;   

DOI  :  10.1016/j.tsf.2018.11.040

来源: Elsevier

【 摘 要 】

Cu2ZnSnS(e)(4) deposited using solution processes has potential for terrawatt-scale deployment. The champion highest efficiency Cu2ZnSn(S,Se)(4) cell published in literature is spin-coated using the highly dangerous hydrazine which is an impractically scalable solvent and deposition combination. As an alternative solvent aminethiol mixtures have shown to complex with a wide range of binary chalcogenides with much lower health risks than hydrazine. Herein we present two further toxicity reductions, first by employing a less harmful amine-thiol pairing and second by using water as a diluting solvent. We exclude extraneous elements from the precursor solution such as halogens and with a sub-micron thickness crystalline absorber achieve an efficiency of 6.8%. With the modified solution deposited by ultrasonic spray pyrolysis, this solution process is scalable, abundant, and relatively non-toxic.

【 授权许可】

Free