Samarium-Doped Nickel Oxide for Superior Inverted Perovskite Solar Cells: Insight into Doping Effect for Electronic Applications

被引:64
作者
Bao, Huaxi [1 ]
Du, Minyong [2 ]
Wang, Hui [2 ]
Wang, Kai [2 ]
Zuo, Xiaokun [2 ]
Liu, Fangyv [2 ]
Liu, Lu [2 ]
Eder, Dominik [3 ]
Cherevan, Alexey [3 ]
Wang, Shimin [1 ]
Wan, Li [1 ]
Zhao, Shuai [4 ]
Liu, Shengzhong [2 ,5 ]
机构
[1] Hubei Univ, Fac Mat Sci & Engn, Hubei Collaborat Innovat Ctr Adv Organ Chem Mat, Hubei Key Lab Polymer Mat,Minist Educ,Key Lab Gre, Wuhan 430062, Peoples R China
[2] Chinese Acad Sci, Dalian Inst Chem Phys, iChEM, Dalian Natl Lab Clean Energy, Dalian 116023, Liaoning, Peoples R China
[3] Tech Univ Wien, Inst Mat Chem, Getreidemarkt 9-165, A-1060 Vienna, Austria
[4] Chongqing Univ Technol, Sch Sci, Chongqing 400054, Peoples R China
[5] Shaanxi Normal Univ, Sch Mat Sci & Engn, Shaanxi Engn Lab Adv Energy Technol, Minist Educ,Key Lab Appl Surface & Colloid Chem, Xian 710119, Shaanxi, Peoples R China
基金
中国国家自然科学基金; 国家重点研发计划;
关键词
flexible solar cells; high efficiency; inverted structures; large-scale perovskite solar modules; Sm; NiO; (x) hole transport layers; HOLE-TRANSPORT MATERIALS; HIGH-PERFORMANCE; EFFICIENT; LAYER; NIOX; NANOPARTICLES; EXTRACTION; TEMPERATURE; CONTACT;
D O I
10.1002/adfm.202102452
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Hole transport layers (HTLs) play a key role in perovskite solar cells (PSCs), particularly in the inverted PSCs (IPSCs) that demand more in its stability. In this study, samarium-doped nickel oxide (Sm:NiOx) nanoparticles are synthesized via a chemical precipitation method and deposited as a hole transport layer in the IPSCs. Sm3+ doping can reduce the formation energy of Ni vacancy and naturally increase the density of Ni vacancies, thereby rendering increased hole density. Thenceforth, the electronic conductivity is enhanced significantly, and work function enlarged in the Sm:NiOx film in favor of extracting holes and suppressing charge recombination. Consequently, the Sm:NiOx-based IPSCs attain outstanding power conversion efficiencies as high as 20.71%. Even when it is applied in flexible solar cells, it still outputs efficiency as high as 17.95%. More importantly, the Sm:NiOx is compatible with large-scale processing whereby the large area IPSCs of 1.0 cm(2) and 40 x 40 mm(2) deliver high efficiencies of 18.51% and 15.27%, respectively, all are among the highest for the inorganic HTLs based IPSCs. This research demonstrates that, while revealing the doping effect in depth, Sm:NiOx can be a promising hole transport material for fabricating efficient, large-area, and flexible IPSCs in the future.
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页数:9
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