[논문]Improved carrier transport in CIGS solar cells induced by Ag treatment

Hwang, Jiseon; Cho, Yunae; Shin, Donghyeop; Jeong, Inyoung; Park, Joo Hyung; Cho, Jun-Sik; Gwak, Jihye; Yun, Jae Ho; Han, Kyuseung; Chang, Hyo Sik; Kim, Kihwan

doi:10.1016/j.jallcom.2021.161193

[해외논문] Improved carrier transport in CIGS solar cells induced by Ag treatment

Journal of alloys and compounds, v.886, 2021년, pp.161193 -

Hwang, Jiseon (Photovoltaics Research Department, Korea Institute of Energy Research) , Cho, Yunae (Department of Physics, Ewha Womans University) , Shin, Donghyeop (Photovoltaics Research Department, Korea Institute of Energy Research) , Jeong, Inyoung (Photovoltaics Research Department, Korea Institute of Energy Research) , Park, Joo Hyung (Photovoltaics Research Department, Korea Institute of Energy Research) , Cho, Jun-Sik (Photovoltaics Research Department, Korea Institute of Energy Research) , Gwak, Jihye (New and Renewable Energy Institute, Korea Institute of Energy Research) , Yun, Jae Ho (Photovoltaics Research Department, Korea Institute of Energy Research) , Han, Kyuseung (Department of Chemical Engineering and Applied Chemistry, Chungnam National University) , Chang, Hyo Sik (Graduate School of Energy) , Kim, Kihwan

Abstract ▼ AI-Helper

Abstract In this work, to improve the performance of three-stage co-evaporated Cu(In,Ga)Se2 (CIGS) solar cells, a small amount of Ag was incorporated during the third stage, and the materials/device characteristics were investigated. Although the amount of added Ag was limited to less than 1 at%, both the film microstructure and the resulting device performance were affected. The Ag-alloyed CIGS thin films exhibited enhanced recrystallization and homogenous Ag distribution throughout the CIGS film bulk, even though the Ag incorporation was performed near the end of the three-stage co-evaporation process. Well-controlled Ag alloying into CIGS solar cells (approximately 0.6 at%) led to increased fill factors, accompanied by increased charge carrier densities as well as reduced detrimental state densities. The approach performed in the present work suggests that the device quality of CIGS solar cells can be tuned by small Ag additions in a similar manner to extrinsic alkali incorporation. Highlights Small amounts of Ag were incorporated into three-stage co-evaporated CIGS solar cells. Ag homogenization occurred and alkali profiles were affected. Ag-alloyed CIGS solar cells exhibited superior performance relative to that of cells without Ag alloying. Ag alloying resulted in an increased charge density and a reduced detrimental state density. Graphical Abstract [DISPLAY OMISSION]

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[해외논문] Improved carrier transport in CIGS solar cells induced by Ag treatment

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[해외논문] Improved carrier transport in CIGS solar cells induced by Ag treatment

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