Rapid supersonic spraying of Cu(In,Ga)(S,Se)₂ nanoparticles to fabricate a solar cell with 5.49% conversion efficiency

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• 作者：Jung-Jae Park^a ; ¹ ; Jong-Gun Lee^a ; ¹ ; Do-Yeon Kim^a ; Jong-Hyuk Lee^a ; Jae Ho Yun^b ; Jihye Gwak^b ; Young-Joo Eo^b ; Ara Cho^b ; Mark T. Swihart^c ; Salem S. Al-Deyab^d ; SeJin Ahn^b ; ^{swisstel@kier.re.kr" class="auth_mail" title="E-mail the corresponding author} ; DongHwan Kim^e ; Sam S. Yoon^a ; ^{skyoon@korea.ac.kr" class="auth_mail" title="E-mail the corresponding author}
• 关键词：CIGS nanoparticle ; Supersonic flow ; Kinetic spray ; CIGS film ; Impact bonding
• 刊名：Acta Materialia
• 出版年：2017
• 出版时间：15 January 2017
• 年：2017
• 卷：123
• 期：Complete
• 页码：44-54
• 全文大小：3658 K

文摘

We demonstrate production of high-quality Cu(InGa)(SSe)₂ (CIGSSe) films by high-rate supersonic spray deposition. This technique is unique in creating particle-based films without introducing impurities, because no additives or binders are used. The thin film deposition process was investigated computationally, to understand the pulverization of the incoming particles. These simulations were consistent with experimental observations. Grain growth was improved by adding a 300-nm copper layer atop the CIGSSe film; selenization of the resulting bilayer produced a CuSe liquid flux that assisted the sintering process. The final CIGSSe film-based solar cell had a conversion efficiency of 5.49% with J_sc = 18.73 mA/cm², V_oc = 0.488 V, and FF = 59.99% in an active area of 0.44 cm².