Nonfullerene Self-Assembled Monolayers As Electron-Selective Contacts for <i>n-i-p</i> Perovskite Solar Cells

Utomo, Drajad S.; Svirskaite, Lauryna M.; Prasetio, Adi; Malinauskiene, Vida; Dally, Pia; Aydin, Erkan; Musiienko, Artem; Getautis, Vytautas; Malinauskas, Tadas; Azmi, Randi; De Wolf, Stefaan

doi:10.1021/acsenergylett.4c00306

Cited by 6 publications

(1 citation statement)

References 76 publications

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“…Despite enormous efforts in tuning the charge transfer between the 2D/3D heterostructure in the p-i-n devices, the development of n-type ligands has far behind their p-type counterparts. N-type phosphonic acid SAMs with naphthalene diimide and anthraquinone cores were developed for application at the bottom interface in n-i-p solar cells . The development of n-type ligands for the top interface in p-i-n solar cells might be inspired by this work.…”

Section: Charge Transfer Of 2d/3d Heterostructure In Perovskite Solar...mentioning

confidence: 99%

Charge Transfer in 2D Halide Perovskites and 2D/3D Heterostructures

Lin,

Tang,

et al. 2024

ACS Energy Lett.

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BiographiesChenjian Lin completed his Ph.D. in Chemistry in the Prof. Michael Wasielewski's Lab at Northwestern University. He is currently a postdoctoral fellow in the Dou's Lab at Purdue University, working on design and synthesis of organic ligands for 2D perovskites and solar cells.Yuanhao Tang is a Ph.D. student in the Dou's Lab at Purdue University, working on fabricating efficient and stable perovskite solar cells.

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Section: Charge Transfer Of 2d/3d Heterostructure In Perovskite Solar...mentioning

confidence: 99%

Charge Transfer in 2D Halide Perovskites and 2D/3D Heterostructures

Lin,

Tang,

et al. 2024

ACS Energy Lett.

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In situ Blending For Co‐Deposition of Electron Transport and Perovskite Layers Enables Over 24% Efficiency Stable Inverted Solar Cells

Wang,

Li,

Huang

et al. 2024

Advanced Materials

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Simplifying the manufacturing processes of multilayered high‐performance perovskite solar cells (PSCs) is yet of vital importance for their cost‐effective production. Herein, an in situ blending strategy is presented for co‐deposition of electron transport layer (ETL) and perovskite absorber by incorporating (3‐(7‐butyl‐1,3,6,8‐tetraoxo‐3,6,7,8‐tetrahydrobenzo‐ [lmn][3,8]phenanthrolin‐2(1H)‐yl)propyl)phosphonic acid (NDP) into the perovskite precursor solutions. The phosphonic acid‐like anchoring group coupled with its large molecular size drives the migration of NDP toward indium tin oxide (ITO) surface to form a distinct ETL during perovskite film forming. This strategy circumvents the critical wetting issue and simultaneously improves the interfacial charge collection efficiencies. Consequently, n‐i‐p PSCs based on in situ blended NDP achieve a champion power conversion efficiency (PCE) of 24.01%, which is one of the highest values for PSCs using organic ETLs. This performance is notably higher than that of ETL‐free (21.19%) and independently spin‐coated (21.42%) counterparts. More encouragingly, the in situ blending strategy dramatically enhances the device stability under harsh conditions by retaining over 90% of initial efficiencies after 250 h in 100 °C or 65% humidity storage. Moreover, this strategy is universally adaptable to various perovskite compositions, device architectures, and electron transport materials (ETMs), showing great potential for applications in diverse optoelectronic devices.

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Fused Carbazole‐based Self‐Assembled Monolayers Enable Efficient Perovskite Solar Cells and Perovskite Light‐Emitting Diodes

Guo,

Yang,

Zhang

et al. 2024

Advanced Optical Materials

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Carbazole‐derived self‐assembled monolayers (SAMs) with excellent hole‐extraction and injection properties are promising hole‐transporting materials for perovskite optoelectronic devices, including perovskite solar cells (PSCs) and perovskite light‐emitting diodes (PeLEDs). The performance and thermal stability of these SAMs are heavily influenced by their chemical structure. Herein, the construction of fused carbazole‐based SAMs is proposed by expanding the π‐conjugation of the carbazole unit for application in PSCs and PeLEDs. Three proof‐of‐concept SAMs are designed and synthesized, termed XS8, XS9, and XS10, that feature highly rigid and planar fused carbazole as the donor and a conjugated alkene unit as the linker. This conjugated extension improves planarity, stability, and enhances the molecular dipole moment. Among these, XS10, with the highest degree of conjugation, demonstrated superior performance in perovskite‐based devices. The PSC device utilizing XS10 achieves a maximum power conversion efficiency (PCE) of 20.28%, surpassing the 17.19% PCE of the classic 2PACz‐based device. Similarly, the PeLED device with XS10 achieves a maximum external quantum efficiency (EQE) of 16.6%, compared to 14.5% for PEDOT‐based devices. This work provides a novel molecular design strategy for creating efficient and stable SAMs for perovskite optoelectronics and other organic electronic devices.

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Nonfullerene Self-Assembled Monolayers As Electron-Selective Contacts for n-i-p Perovskite Solar Cells

Cited by 6 publications

References 76 publications

Charge Transfer in 2D Halide Perovskites and 2D/3D Heterostructures

Charge Transfer in 2D Halide Perovskites and 2D/3D Heterostructures

In situ Blending For Co‐Deposition of Electron Transport and Perovskite Layers Enables Over 24% Efficiency Stable Inverted Solar Cells

Fused Carbazole‐based Self‐Assembled Monolayers Enable Efficient Perovskite Solar Cells and Perovskite Light‐Emitting Diodes

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