当前位置: X-MOL 学术Adv. Energy Mater. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Strategic Synthesis of Ultrasmall NiCo2O4 NPs as Hole Transport Layer for Highly Efficient Perovskite Solar Cells
Advanced Energy Materials ( IF 27.8 ) Pub Date : 2018-02-20 , DOI: 10.1002/aenm.201702722
Dan Ouyang 1 , Junyan Xiao 1 , Fei Ye 1 , Zhanfeng Huang 1 , Hong Zhang 1 , Lu Zhu 1 , Jiaqi Cheng 1 , Wallace C. H. Choy 1
Affiliation  

This study proposes a novel strategy of controllable deamination of Co–NH3 complexes in a system containing Ni(OH)2 to synthesize ultrasmall ternary oxide nanoparticles (NPs), NiCo2O4. Through this approach, ultrasmall (5 nm on average) and well‐dispersed NiCo2O4 NPs without exotic ligands are obtained, which enables the formation of uniform and pin‐hole free films. The tightly covered NiCo2O4 films also facilitate the formation of large perovskite grains and thus reduce film defects. The results show that with the NiCo2O4 NPs as the hole transport layer (HTL), the perovskite solar cells reach a high power conversion efficiency (PCE) of 18.23% and a promising stability (maintained ≈90% PCE after 500 h light soaking). To the best of the author's knowledge, it is the first time that spinel NiCo2O4 NPs have been applied as hole transport layer in perovskite solar cells successfully. This work not only demonstrates the potential applications of ternary oxide NiCo2O4 as HTLs in hybrid perovskite solar cells but also provides an insight into the design and synthesis of ultrasmall and ligand‐free NPs HTLs to enable cost‐effective photovoltaic devices.

中文翻译:

战略性合成超小NiCo2O4 NPs作为高效钙钛矿太阳能电池的空穴传输层

这项研究提出了一种可控制的Co-NH 3络合物在含Ni(OH)2的体系中可控制的脱氨反应,以合成超小型三元氧化物纳米颗粒(NPs)NiCo 2 O 4的新策略。通过这种方法,可以获得超小(平均5 nm)且分散良好的NiCo 2 O 4 NP,没有奇异的配体,从而能够形成均匀且无针孔的薄膜。紧密覆盖的NiCo 2 O 4膜还有助于形成较大的钙钛矿晶粒,从而减少膜缺陷。结果表明,采用NiCo 2 O 4NPs作为空穴传输层(HTL),钙钛矿太阳能电池可达到18.23%的高功率转换效率(PCE)和有希望的稳定性(光浸泡500 h后可保持≈90%PCE)。据作者所知,这是首次将尖晶石NiCo 2 O 4 NPs成功地用作钙钛矿型太阳能电池的空穴传输层。这项工作不仅证明了三元氧化物NiCo 2 O 4作为杂化钙钛矿太阳能电池中的HTL的潜在应用,而且还提供了对超小型无配体NP HTLs的设计和合成的深刻见解,以实现具有成本效益的光伏器件。
更新日期:2018-02-20
down
wechat
bug