Efficiency Enhancement of Perovskite Solar Cells through Fast Electron Extraction: The Role of Graphene Quantum Dots

被引：674

作者：

Zhu, Zonglong ^{[1
,2
]}

Ma, Jiani ^{[3
]}

Wang, Zilong ^{[2
]}

Mu, Cheng ^{[2
]}

Fan, Zetan ^{[4
]}

Du, Lili ^{[3
]}

Bai, Yang ^{[2
]}

Fan, Louzhen ^{[4
]}

Yan, He ^{[2
]}

Phillips, David Lee ^{[3
]}

Yang, Shihe ^{[1
,2
]}

机构：

[1] Hong Kong Univ Sci & Technol, Nano Sci & Technol Program, Kowloon, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Dept Chem, Kowloon, Hong Kong, Peoples R China

[3] Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong, Peoples R China

[4] Beijing Normal Univ, Dept Chem, Beijing 100875, Peoples R China

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2014年 / 136卷 / 10期

关键词：

LENGTHS;

D O I：

10.1021/ja4132246

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on a significant power conversion efficiency improvement of perovskite solar cells from 8.81% to 10.15% due to insertion of an ultrathin graphene quantum dots (GQDs) layer between perovskite and TiO2. A strong quenching of perovskite photoluminescence was observed at similar to 760 nm upon the addition of the GQDs, which is pronouncedly correlated with the increase of the IPCE and the APCE of the respective cells. From the transient absorption measurements, the improved cell efficiency can be attributed to the much faster electron extraction with the presence of GQDs (90-106 ps) than without their presence (260-307 ps). This work highlights that GQDs can act as a superfast electron tunnel for optoelectronic devices.

引用

页码：3760 / 3763

页数：4

共 25 条

[1] High-Performance Perovskite-Polymer Hybrid Solar Cells via Electronic Coupling with Fullerene Monolayers [J].

Abrusci, Agnese ;

Stranks, Samuel D. ;

Docampo, Pablo ;

Yip, Hin-Lap ;

Jen, Alex K-Y. ;

Snaith, Henry J. .

NANO LETTERS, 2013, 13 (07) :3124-3128

[2] Sequential deposition as a route to high-performance perovskite-sensitized solar cells [J].

Burschka, Julian ;

Pellet, Norman ;

Moon, Soo-Jin ;

Humphry-Baker, Robin ;

Gao, Peng ;

Nazeeruddin, Mohammad K. ;

Graetzel, Michael .

NATURE, 2013, 499 (7458) :316-+

[3] Planar Heterojunction Perovskite Solar Cells via Vapor-Assisted Solution Process [J].

Chen, Qi ;

Zhou, Huanping ;

Hong, Ziruo ;

Luo, Song ;

Duan, Hsin-Sheng ;

Wang, Hsin-Hua ;

Liu, Yongsheng ;

Li, Gang ;

Yang, Yang .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2014, 136 (02) :622-625

[4] Opportunities and challenges for a sustainable energy future [J].

Chu, Steven ;

Majumdar, Arun .

NATURE, 2012, 488 (7411) :294-303

[5] Mesoscopic CH3NH3PbI3/TiO2 Heterojunction Solar Cells [J].

Etgar, Lioz ;

Gao, Peng ;

Xue, Zhaosheng ;

Peng, Qin ;

Chandiran, Aravind Kumar ;

Liu, Bin ;

Nazeeruddin, Md. K. ;

Graetzel, Michael .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2012, 134 (42) :17396-17399

[6] Luminscent Graphene Quantum Dots for Organic Photovoltaic Devices [J].

Gupta, Vinay ;

Chaudhary, Neeraj ;

Srivastava, Ritu ;

Sharma, Gauri Datt ;

Bhardwaj, Ramil ;

Chand, Suresh .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2011, 133 (26) :9960-9963

[7] Factors Limiting Device Efficiency in Organic Photovoltaics [J].

Janssen, Rene A. J. ;

Nelson, Jenny .

ADVANCED MATERIALS, 2013, 25 (13) :1847-1858

[8] Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells [J].

Kojima, Akihiro ;

Teshima, Kenjiro ;

Shirai, Yasuo ;

Miyasaka, Tsutomu .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2009, 131 (17) :6050-+

[9] An Electrochemical Avenue to Green-Luminescent Graphene Quantum Dots as Potential Electron-Acceptors for Photovoltaics [J].

Li, Yan ;

Hu, Yue ;

Zhao, Yang ;

Shi, Gaoquan ;

Deng, Lier ;

Hou, Yanbing ;

Qu, Liangti .

ADVANCED MATERIALS, 2011, 23 (06) :776-+

[10] Synthesis and characterization of organic-inorganic perovskite thin films prepared using a versatile two-step dipping technique [J].

Liang, KN ;

Mitzi, DB ;

Prikas, MT .

CHEMISTRY OF MATERIALS, 1998, 10 (01) :403-411

← 1 2 3 →