Room-temperature multiple ligands-tailored SnO2 quantum dots endow in situ dual-interface binding for upscaling efficient perovskite photovoltaics with high VOC

被引：52

作者：

Ren, Zhiwei ^{[1
,2
]}

Liu, Kuan ^{[1
,3
]}

Hu, Hanlin ^{[4
]}

Guo, Xuyun ^{[5
,6
]}

Gao, Yajun ^{[7
]}

Fong, Patrick W. K. ^{[1
]}

Liang, Qiong ^{[1
,3
]}

Tang, Hua ^{[1
]}

Huang, Jiaming ^{[1
]}

Zhang, Hengkai ^{[1
]}

Qin, Minchao ^{[8
]}

Cui, Li ^{[1
]}

Chandran, Hrisheekesh Thachoth ^{[1
]}

Shen, Dong ^{[9
]}

Lo, Ming-Fai ^{[9
]}

Ng, Annie ^{[2
]}

Surya, Charles ^{[2
]}

Shao, Minhua ^{[6
]}

Lee, Chun-Sing ^{[9
]}

Lu, Xinhui ^{[8
]}

Laquai, Frederic ^{[7
]}

Zhu, Ye ^{[5
]}

Li, Gang ^{[1
,3
]}

机构：

[1] Hong Kong Polytech Univ, Res Inst Smart Energy RISE, Guangdong Hong Kong Macao GHM Joint Lab Photon Th, Dept Elect & Informat Engn,Hung Horn,Kowloon, Hong Kong, Peoples R China

[2] Nazarbayev Univ, Dept Elect & Comp Engn, Nur Sultan, Kazakhstan

[3] Hong Kong Polytech Univ, Shenzhen Res Inst, Shenzhen 518057, Peoples R China

[4] Shenzhen Polytech, Hoffmann Inst Adv Mat, 7098 Liuxian Blvd, Shenzhen 518055, Peoples R China

[5] Hong Kong Polytech Univ, Dept Appl Phys, Hung Hom, Kowloon, Hong Kong, Peoples R China

[6] Hong Kong Univ Sci & Technol, Dept Chem & Biol Engn, Clear Water Bay, Hong Kong, Peoples R China

[7] King Abdullah Univ Sci & Technol KAUST, KAUST Solar Ctr KSC, Phys Sci & Engn Div PSE, Mat Sci & Engn Program MSE, Thuwal 239556900, Saudi Arabia

[8] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong 999077, Peoples R China

[9] City Univ Hong Kong, Ctr Super Diamond & Adv Films COSDAF, Dept Chem, Hong Kong, Peoples R China

来源：

LIGHT-SCIENCE & APPLICATIONS | 2021年 / 10卷 / 01期

基金：

中国国家自然科学基金;

关键词：

SOLAR-CELLS; TIN OXIDE; HALIDE PEROVSKITES; ELECTRON; LAYER; LIGHT; NANOCRYSTALS; DEPOSITION; TRIHALIDE; SIZE;

D O I：

10.1038/s41377-021-00676-6

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The benchmark tin oxide (SnO2) electron transporting layers (ETLs) have enabled remarkable progress in planar perovskite solar cell (PSCs). However, the energy loss is still a challenge due to the lack of "hidden interface" control. We report a novel ligand-tailored ultrafine SnO2 quantum dots (QDs) via a facile rapid room temperature synthesis. Importantly, the ligand-tailored SnO2 QDs ETL with multi-functional terminal groups in situ refines the buried interfaces with both the perovskite and transparent electrode via enhanced interface binding and perovskite passivation. These novel ETLs induce synergistic effects of physical and chemical interfacial modulation and preferred perovskite crystallization-directing, delivering reduced interface defects, suppressed non-radiative recombination and elongated charge carrier lifetime. Power conversion efficiency (PCE) of 23.02% (0.04 cm(2)) and 21.6% (0.98 cm(2), V-OC loss: 0.336V) have been achieved for the blade-coated PSCs (1.54 eV E-g) with our new ETLs, representing a record for SnO2 based blade-coated PSCs. Moreover, a substantially enhanced PCE (V-OC) from 20.4% (1.15 V) to 22.8% (1.24 V, 90 mV higher V-OC, 0.04 cm(2) device) in the blade-coated 1.61 eV PSCs system, via replacing the benchmark commercial colloidal SnO2 with our new ETLs.

引用

页数：15