Development of organic-inorganic double hole-transporting material for high performance perovskite solar cells

被引：26

作者：

Jo, Jea Woong ^{[1
]}

Seo, Myung-Seok ^{[1
,2
]}

Jung, Jae Woong ^{[3
]}

Park, Joon-Suh ^{[4
]}

Sohn, Byeong-Hyeok ^{[2
]}

Ko, Min Jae ^{[5
]}

Son, Hae Jung ^{[1
]}

机构：

[1] Korea Inst Sci & Technol, Photoelect Hybrids Res Ctr, Seoul 02792, South Korea

[2] Seoul Natl Univ, Dept Chem, 1 Gwanak Ro, Seoul 08826, South Korea

[3] Kyung Hee Univ, Dept Adv Mat Engn Informat & Elect, Yongin 26035, Gyeonggi Do, South Korea

[4] Korea Inst Sci & Technol, Nanophoton Res Ctr, Seoul 02792, South Korea

[5] Hanyang Univ, Dept Chem Engn, 222 Wangsimri Ro, Seoul 04763, South Korea

来源：

JOURNAL OF POWER SOURCES | 2018年 / 378卷

关键词：

Perovskite solar cell; Hole-transporting layer; Interfacial engineering; Photovoltaics; Conjugated polyelectrolyte; STABLE PLANAR PEROVSKITE; LOW-TEMPERATURE; EXTRACTION LAYER; BASE ADDUCT; EFFICIENT; CRYSTALLIZATION; DEPOSITION; STABILITY;

D O I：

10.1016/j.jpowsour.2017.12.024

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The control of the optoelectronic properties of the interlayers of perovskite solar cells (PSCs) is crucial for achieving high photovoltaic performances. Of the solution-processable interlayer candidates, NiOx is considered one of the best inorganic hole-transporting layer (HTL) materials. However, the power conversion efficiencies (PCEs) of NiOx-based PSCs are limited by the unfavorable contact between perovskite layers and NiOx HTLs, the high density of surface trap sites, and the inefficient charge extraction from perovskite photoactive layers to anodes. Here, we introduce a new organic-inorganic double HTL consisting of a Cu:NiOx thin film passivated by a conjugated polyelectrolyte (PhNa-1T) film. This double HTL has a significantly lower pinhole density and forms better contact with perovskite films, which results in enhanced charge extraction. As a result, the PCEs of PSCs fabricated with the double HTL are impressively improved up to 17.0%, which is more than 25% higher than that of the corresponding PSC with a Cu:NiOx HTL. Moreover, PSCs with the double HTLs exhibit similar stabilities under ambient conditions to devices using inorganic Cu:NiOx. Therefore, this organic-inorganic double HTL is a promising interlayer material for high performance PSCs with high air stability.

引用

页码：98 / 104

页数：7