Study on thermal evolution of the cuse phase in nanoparticle-based absorber layers for solution-processed chalcopyrite photovoltaic devices

Yeong Hui Seo, Byung Seok Lee, Yejin Jo, Han Gyeol Kim, Kyoohee Woo, Jooho Moon, Youngmin Choi, Beyong Hwan Ryu, Sunho Jeong

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Nanoparticle-based, solution-processed chalcopyrite photovoltaic devices have drawn tremendous attraction for the realization of low-cost, large-area solar cell applications. In particular, it has been recently demonstrated that the CuSe phase plays a critical role in allowing the formation of device-quality, nanoparticle-based chalcopyrite absorber layers. For further in-depth study, with the aim of understanding the thermal behavior of the CuSe phase that triggers the vigorous densification reaction, a requisite for high-performance chalcopyrite absorber layers, both multiphase (CuSe-phase including) and single-phase (CuSe-phase free) CISe nanoparticles are investigated from the viewpoint of compositional variation and crystalline structural evolution. In addition, with CuSe-phase including CISe particulate layers, the basic restrictions in thermal treatment necessary for activating effectively the CuSe-phase induced densification reaction are suggested, in conjunction with consideration on the thermal decomposition of organic additives that are inevitably incorporated in nanoparticle-based absorber layers.

Original languageEnglish
Pages (from-to)6930-6936
Number of pages7
JournalACS Applied Materials and Interfaces
Issue number15
Publication statusPublished - 2013 Aug 14


All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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