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12.29% Low Temperature–Processed Dopant‐Free CdS/p‐Si Heterojunction Solar Cells
Author(s) -
Cai Lun,
Wang Wenxian,
Jin Lei,
Yao Zhirong,
Lin Wenjie,
Meng Lanxiang,
Ai Bin,
Liang Zongcun,
Huang Yuelong,
Zhang Fuqin,
Altermatt Pietro P.,
Shen Hui
Publication year - 2019
Publication title -
advanced materials interfaces
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.671
H-Index - 65
ISSN - 2196-7350
DOI - 10.1002/admi.201900367
Subject(s) - materials science , dopant , optoelectronics , heterojunction , doping , wafer , indium tin oxide , solar cell , annealing (glass) , nanotechnology , thin film , metallurgy
Most crystalline silicon (c‐Si) solar cells are based on high temperature–processed p‐n junctions or highly doped heterojunctions. The concept of dopant‐free carrier selective contact has become a research hotspot and been successfully demonstrated with n‐type Si wafers, showing the great potential of simplified fabrication process and lower thermal‐consuming. However, there are few successful cases on p‐Si, dopant‐free p‐Si/CdS (cadmium sulfide)/ITO (indium tin oxide) solar cells with champion efficiency of 12.29% (device area 4 cm 2 ) have been demonstrated with DC magnetron sputtered CdS thin films working as electron‐selective contact. A proper annealing treatment is found essential in improving the p‐Si/CdS/ITO heterocontact and device performance. The author's preliminary results confirm the feasibility of preparation of efficient p‐Si wafer–based dopant‐free solar cells.