Journal of the Korean Physical Society

, Volume 75, Issue 9, pp 703–707 | Cite as

Thermal Activation of Boron- and Phosphorus-Doped Amorphous Silicon and the Contribution to Improved Efficiency in Hydrogenated Amorphous Silicon Solar Cells

  • Ka-Hyun KimEmail author


Hydrogenated amorphous silicon (a-Si:H) is an interesting candidate as an absorber material for solar cells. Despite the wealth of research to improve the efficiency of a-Si:H solar cells by improving either the material quality of the absorber layer or by means of light trapping approaches, efforts to improve the efficiency by means of doped layer manipulation are relatively rare. In this work, single-junction a-Si:H solar cells with improved efficiency due to thermal activation of doped layers via thermal annealing will be presented. Temperature-dependent dark conductivity measurements revealed that p- and n-type doped a-Si:H materials show different equilibrium temperatures. External quantum efficiency at different annealing temperatures revealed that front surface collection probability was improved with the activation of a p layer, after which the collection probability of the back surface was improved with the activation of an n layer.


Amorphous silicon Solar cells Dopant activation 


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This work was supported by the Korea Institute of Energy Technology Evaluation and Planning (KETEP) and by the Ministry of Trade, Industry & Energy (MOTIE) of the Republic of Korea (Grant Nos. 20183010013900 and 20183010013880).


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Copyright information

© The Korean Physical Society 2019

Authors and Affiliations

  1. 1.Department of PhysicsChungbuk National UniversityCheongjuKorea

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