Multifunctional atomic force probes for Mn2+ doped perovskite solar cells

Wu, Yinghui1,2; Chen, Wei2,3; Wan, Zunyuan2; Djurisic, Aleksandra B.3; Feng, Xiyuan2; Liu, Liyu1; Chen, Guo1; Liu, Ruchuan1; He, Zhubing2

2019-06-15

10.1016/j.jpowsour.2019.04.009

JOURNAL OF POWER SOURCES   影响因子和分区

0378-7753

1873-2755

Doping in organic inorganic perovskite semiconductors is an effective method to tailor their optoelectronic properties. In this work, manganese-doped perovskite films with different Mn/Pb ratios ranging from 0% to 2% were systematically studied. The device performance of 0.2% Mn-doped devices was improved compared to that of a device without Mn. However, a further increase of the doping concentration induced a decrease in performance. Several characteristics (especially different scanning probe microscopy characteristics) reveal that an increased dopant concentration results in reduced crystallinity and a change in the film morphology and causes a deterioration in photovoltaic performance for higher dopant concentrations. In the best-performing samples (0.2%), a shift in the valence band level and band gap are found which are responsible for the increased open circuit voltage, while increased grain boundaries and lower surface charge density are responsible for a small reduction in the short circuit current. Thus, multifunctional scanning probe microscopy approaches, combined with different film characterization techniques, offer us effective tools to investigate the impact of doping in the perovskite materials and the corresponding device performance.

Perovskite solar cells SKPM C-AFM EFM

SCI ; EI

英语

通讯

Shenzhen Key Laboratory Project[ZDSYS201602261933302]

Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science

Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary

WOS:000468717900016

ELSEVIER SCIENCE BV

20191506762327

Crystallinity ; Deterioration ; Energy gap ; Grain boundaries ; Hydrophobicity ; Morphology ; Open circuit voltage ; Perovskite ; Scanning probe microscopy ; Semiconductor doping ; Solar cells

Minerals:482.2 ; Solar Cells:702.3 ; Semiconducting Materials:712.1 ; Chemistry:801 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Materials Science:951

MATERIALS SCIENCE

Web of Science

1.Chongqing Univ, Coll Phys, Chongqing Key Lab Soft Condensed Matter Phys & Sm, 55 Univ City South Rd, Chongqing 401331, Peoples R China
2.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen Key Lab Full Spectral Solar Elect Genera, 1088 Xueyuan Rd, Shenzhen 518055, Peoples R China
3.Univ Hong Kong, Dept Phys, Pokfulam, Hong Kong, Peoples R China

Wu, Yinghui,Chen, Wei,Wan, Zunyuan,et al. Multifunctional atomic force probes for Mn2+ doped perovskite solar cells[J]. JOURNAL OF POWER SOURCES,2019,425:130-137.

Wu, Yinghui.,Chen, Wei.,Wan, Zunyuan.,Djurisic, Aleksandra B..,Feng, Xiyuan.,...&He, Zhubing.(2019).Multifunctional atomic force probes for Mn2+ doped perovskite solar cells.JOURNAL OF POWER SOURCES,425,130-137.

Wu, Yinghui,et al."Multifunctional atomic force probes for Mn2+ doped perovskite solar cells".JOURNAL OF POWER SOURCES 425(2019):130-137.