公开(公告)号：US20150027896A1

公开(公告)日：2015-01-29

申请号：US13975743

申请日：2013-08-26

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Jin Young Kim ,  Doh-Kwon Lee ,  Hong Gon Kim ,  Bong Soo Kim ,  Se Won Seo ,  Kee Doo Lee ,  Hae Jung Son ,  Min Jae Ko

IPC: H01L31/18

CPC classification number: H01L21/02422 ,  H01L21/02425 ,  H01L21/02491 ,  H01L21/0256 ,  H01L21/02568 ,  H01L21/02628 ,  H01L31/0326 ,  Y02E10/50

Abstract: A Cu2ZnSnS4-xSex (0≦x≦4) thin film solar cell is disclosed. The thin film solar cell includes a Cu2ZnSnS4-xSex (0≦x≦4) thin film as an absorber layer produced by forming a precursor film composed of Cu, Zn, Sn, and Se using an ionic liquid as a solvent through a constant current process and annealing the precursor film with sulfur. Also disclosed is a method for fabricating the thin film solar cell. The method uses a non-vacuum electrodeposition process that is appropriate for large-area mass production and is thus cost effective compared to a vacuum process. In addition, since the method uses an ionic liquid, the formation of by-products harmful to humans as a result of side reactions is suppressed. Furthermore, the method uses a one-step electrodeposition process, which enables the deposition of a maximum of four elements at one time, or a multi-step deposition process, and an annealing process.

Abstract translation: 公开了一种Cu2ZnSnS4-xSex（0＆nlE; x＆nlE; 4）薄膜太阳能电池。 薄膜太阳能电池包括通过使用离子液体作为溶剂通过恒定电流形成由Cu，Zn，Sn和Se构成的前体膜制成的吸收层的Cu2ZnSnS4-xSex（0＆lt; nlE; x＆nlE; 4）薄膜 用硫处理和退火前体膜。 还公开了一种制造薄膜太阳能电池的方法。 该方法使用适用于大面积批量生产的非真空电沉积工艺，因此与真空工艺相比是成本有效的。 此外，由于该方法使用离子液体，因此抑制由于副反应而对人体有害的副产物的形成。 此外，该方法使用一步电沉积工艺，其能够一次最多沉积四个元素，或多步沉积工艺和退火工艺。