Efficient and Stable Large-Area Perovskite Solar Cells with Inorganic Perovskite/Carbon Quantum Dot-Graded Heterojunction

被引：22

作者：

Sun, Qiang ^{[1
]}

Shen, Cai ^{[2
]}

Wang, Deyu ^{[2
]}

Zhang, Tao ^{[1
]}

Ban, Huaxia ^{[1
]}

Shen, Yan ^{[1
]}

Zhang, Zhipan ^{[3
]}

Zhang, Xiao-Li ^{[4
]}

Yang, Guanjun ^{[5
]}

Wang, Mingkui ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Wuhan 430074, Hubei, Peoples R China

[2] Chinese Acad Sci, Ningbo Inst Mat Technol & Engn, 1219 Zhongguan Rd, Ningbo 315201, Peoples R China

[3] Beijing Inst Technol, Sch Chem, Beijing 102488, Peoples R China

[4] Zhengzhou Univ, State Ctr Int Cooperat Designer Low Carbon & Envi, Sch Mat Sci & Engn, Zhengzhou 450001, Peoples R China

[5] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Peoples R China

来源：

RESEARCH | 2021年 / 2021卷

基金：

中国国家自然科学基金;

关键词：

PROCESSED PEROVSKITE; PLANAR PEROVSKITE; TRANSPORT; BANDGAP; PASSIVATION; PERFORMANCE; STABILITY; CATION; LAYERS;

D O I：

10.34133/2021/9845067

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

This work reports on a compositionally graded heterojunction for photovoltaic application by cooperating fluorine-doped carbon quantum dots (FCQDs in short) into the CsPbI2.5Br0.5 inorganic perovskite layer. Using this CsPbI2.5Br0.5/FCQDs graded heterojunction in conjunction with low-temperature-processed carbon electrode, a power conversion efficiency of 13.53% for 1 cm(2) all-inorganic perovskite solar cell can be achieved at AM 1.5G solar irradiation. To the best of our knowledge, this is one of the highest efficiency reported for carbon electrode based all-inorganic perovskite solar cells so far, and the first report of 1 cm(2) carbon counter electrode based inorganic perovskite solar cell with PCE exceeding 13%. Moreover, the inorganic perovskite/carbon quantum dot graded heterojunction photovoltaics maintained over 90% of their initial efficiency after thermal aging at 85 degrees for 1056 hours. This conception of constructing inorganic perovskite/FCQDs graded heterojunction offers a feasible pathway to develop efficient and stable photovoltaics for scale-up and practical applications.

引用

页数：10

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