Cascaded band gap design for highly efficient electron transport layer-free perovskite solar cells

Gao, Liguo; Xu, Cai; Su, Yingjie; Liu, Anmin; Meng, Xianhe

doi:10.1039/d2cc01807a

Cited by 4 publications

(2 citation statements)

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“…The ETL, also known as the electron extraction layer or electron collection layer, has recently piqued the interest of researchers working on PSCs. Although some studies have claimed that an ETL-free PSCs is possible in obtaining cell efficiency of up to 20% [9,10], most researchers still believe that the ETL is vital in facilitating an efficient electron collection and transportation between the perovskite layer and the electrodes [11][12][13]. The ETL promotes the transportation of photogenerated electrons that are extracted from the perovskite layer before being collected through the ohmic contact by the electrodes [14].…”

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confidence: 99%

Metal-Doped TiO2 Thin Film as an Electron Transfer Layer for Perovskite Solar Cells: A Review

et al. 2022

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The electron transfer layer (ETL) plays a vital role in achieving high-performance perovskite solar cells (PSCs). Titanium dioxide (TiO2) is primarily utilised as the ETL since it is low-cost, chemically stable, and has the simplest thin-film preparation methods. However, TiO2 is not an ideal ETL because it leads to low conductivity, conduction band mismatch, and unfavourable electron mobility. In addition, the exposure of TiO2 to ultraviolet light induces the formation of oxygen vacancies at the surface. To overcome these issues, doping TiO2 with various metal ions is favourable to improve the surface structure properties and electronic properties. This review focuses on the bulk modification of TiO2 via doping with various metal ions concentrations to improve electrical and optical properties, charge carrier density, and interfacial electron–hole recombination, thus contributing to enhancing the power conversion efficiency (PCE) of the PSCs.

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Section: Introductionmentioning

confidence: 99%

Metal-Doped TiO2 Thin Film as an Electron Transfer Layer for Perovskite Solar Cells: A Review

et al. 2022

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“…Tauc plots of all compounds were also determined by calculations (Figure S13b–f). , The band-gap energy ( E bg ) of each sample can be estimated by the x -axis intercept at ( Ah ν) 2 = 0. The E bg values of L1 , L2 , and 1 – 3 are 2.18, 1.96, 2.14, 2.06, and 2.01 eV, respectively.…”

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confidence: 99%

[Fe₂S₂–Ag_x]-Hydrogenase Active-Site-Containing Coordination Polymers and Their Photocatalytic H₂ Evolution Reaction Properties

et al. 2022

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Three [Fe 2 S 2 −Ag x ]-hydrogenase active-site-containing coordination polymers (CPs), {[Fe 2were obtained by a direct synthesis method from ligands [FeFe](4-cpmt) 2 (CO) 6 [L1; 4-cpmt = (4-cyanophenyl)methanethiolate] and [FeFe](3-cpmt) 2 (CO) 6 [L2; 3-cpmt = (3-cyanophenyl)methanethiolate] with silver salts. 1− 3 represent the first examples of [FeFe]-hydrogenase-based CPs. It was worth noting that the Ag−S bonding between the Ag centers and S atoms of a [Fe 2 S 2 ] cluster produced a novel [Fe 2 S 2 −Ag x ] (x = 1 or 2) catalytic site in all three polymers. The results of photochemical H 2 generation experiments indicated that 2 and 3 containing [Fe 2 S 2 −Ag 2 ] active sites showed obviously improved catalytic performances compared with ligands L1 and L2 and [Fe 2 S 2 −Ag 1 ]-containing 1. This work provides a pioneering strategy for the direct synthesis of [Fe 2 S 2 ]-based CPs or metal−organic frameworks.

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Optimization of open circuit voltage and stability of Sn–Pb mixed perovskite solar cells by phenyl–ethyl ammonium bromide

Yang,

Chen,

Zhang

et al. 2023

J Mater Sci

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Cascaded band gap design for highly efficient electron transport layer-free perovskite solar cells

Abstract: The elimination of electron transport layer (ETL) to fabricate ETL-free perovskite solar cells (PSCs) could save the manufacturing cost and time. However, the direct contact of perovskite and transparent conducting...

Cited by 4 publications

References 23 publications

Metal-Doped TiO2 Thin Film as an Electron Transfer Layer for Perovskite Solar Cells: A Review

Metal-Doped TiO2 Thin Film as an Electron Transfer Layer for Perovskite Solar Cells: A Review

[Fe₂S₂–Ag_x]-Hydrogenase Active-Site-Containing Coordination Polymers and Their Photocatalytic H₂ Evolution Reaction Properties

Optimization of open circuit voltage and stability of Sn–Pb mixed perovskite solar cells by phenyl–ethyl ammonium bromide

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Cascaded band gap design for highly efficient electron transport layer-free perovskite solar cells

Abstract: The elimination of electron transport layer (ETL) to fabricate ETL-free perovskite solar cells (PSCs) could save the manufacturing cost and time. However, the direct contact of perovskite and transparent conducting...

Cited by 4 publications

References 23 publications

Metal-Doped TiO2 Thin Film as an Electron Transfer Layer for Perovskite Solar Cells: A Review

Metal-Doped TiO2 Thin Film as an Electron Transfer Layer for Perovskite Solar Cells: A Review

[Fe2S2–Agx]-Hydrogenase Active-Site-Containing Coordination Polymers and Their Photocatalytic H2 Evolution Reaction Properties

Optimization of open circuit voltage and stability of Sn–Pb mixed perovskite solar cells by phenyl–ethyl ammonium bromide

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[Fe₂S₂–Ag_x]-Hydrogenase Active-Site-Containing Coordination Polymers and Their Photocatalytic H₂ Evolution Reaction Properties