Stable high efficiency two-dimensional perovskite solar cells via cesium doping

Zhang, Xu; Ren, Xiaodong; Liu, Bin; Munir, Rahim; Zhu, Xuejie; Yang, Dong; Li, Jianbo; Liu, Yucheng; Smilgies, Detlef‐M.; Li, Ruipeng; Yang, Zhou; Niu, Tianqi; Wang, Xiuli; Amassian, Aram; Zhao, Kui; Liu, Shengzhong

doi:10.1039/c7ee01145h

Cited by 619 publications

(612 citation statements)

References 47 publications

Supporting

Mentioning

584

Contrasting

Order By: Relevance

“…The photocurrent density-voltage (J-V) curves of the representative solar cells based on different absorber Table S2 in the Supporting Information. [32,35,36,42] Therefore, further work such as improving the grain size and quality of the films should be able to achieve higher J sc values and PCEs. Note that the average J sc of our solar cells is lower than that in other reports.…”

Section: Resultsmentioning

confidence: 99%

“…[34] Their 2D (PEA) 2 (MA) 2 Pb 3 I 10 devices showed much better stability with respect to the 3D MAPbI 3 devices. [35][36][37][38][39][40][41][42] Dion-Jacobson (DJ) 2D perovskites of the type BA n−1 M n X 3n+1 , including a divalent organic B cation, are a very new entry in the class of perovskites and are very promising for solar cell applications. [32] The hot-casting technique used to prepare (BA) 2 (MA) 3 Pb 4 I 13 solar cells achieved an impressive PCE of 12.52% with significantly improved short-circuit current density (J sc ) and an enhanced environmental stability.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Compositional and Solvent Engineering in Dion–Jacobson 2D Perovskites Boosts Solar Cell Efficiency and Stability

Mao

Stoumpos

et al. 2019

Advanced Energy Materials

234

216

View full text Add to dashboard Cite

Hybrid halide 2D perovskites deserve special attention because they exhibit superior environmental stability compared with their 3D analogs. The closer interlayer distance discovered in 2D Dion–Jacobson (DJ) type of halide perovskites relative to 2D Ruddlesden–Popper (RP) perovskites implies better carrier charge transport and superior performance in solar cells. Here, the structure and properties of 2D DJ perovskites employing 3‐(aminomethyl)piperidinium (3AMP2+) as the spacing cation and a mixture of methylammonium (MA+) and formamidinium (FA+) cations in the perovskite cages are presented. Using single‐crystal X‐ray crystallography, it is found that the mixed‐cation (3AMP)(MA0.75FA0.25)3Pb4I13 perovskite has a narrower bandgap, less distorted inorganic framework, and larger PbIPb angles than the single‐cation (3AMP)(MA)3Pb4I13. Furthermore, the (3AMP)(MA0.75FA0.25)3Pb4I13 films made by a solvent‐engineering method with a small amount of hydriodic acid have a much better film morphology and crystalline quality and more preferred perpendicular orientation. As a result, the (3AMP)(MA0.75FA0.25)3Pb4I13‐based solar cells exhibit a champion power conversion efficiency of 12.04% with a high fill factor of 81.04% and a 50% average efficiency improvement compared to the pristine (3AMP)(MA)3Pb4I13 cells. Most importantly, the 2D DJ 3AMP‐based perovskite films and devices show better air and light stability than the 2D RP butylammonium‐based perovskites and their 3D analogs.

show abstract

Section: Resultsmentioning

confidence: 99%

mentioning

confidence: 99%

Compositional and Solvent Engineering in Dion–Jacobson 2D Perovskites Boosts Solar Cell Efficiency and Stability

Mao

Stoumpos

et al. 2019

Advanced Energy Materials

234

216

View full text Add to dashboard Cite

show abstract

“…The red shift of PL occurred in MAAc and "L-I" based film may be due to the excess MA + (Figure 2c). [33][34][35][36] Moreover, the PL spectra of LDRP Sn perovskite with different layers (n) and 3D Sn perovskite ( Figure S5, Supporting Information) showed a blue shift of PL peaks from about 990 to 820 nm, corresponding to the phase from 3D to low dimension (LDRP, n = 2, 3, 4, etc.) [33][34][35][36] Moreover, the PL spectra of LDRP Sn perovskite with different layers (n) and 3D Sn perovskite ( Figure S5, Supporting Information) showed a blue shift of PL peaks from about 990 to 820 nm, corresponding to the phase from 3D to low dimension (LDRP, n = 2, 3, 4, etc.)…”

Section: Doi: 101002/advs201800793mentioning

confidence: 99%

Management of Crystallization Kinetics for Efficient and Stable Low‐Dimensional Ruddlesden–Popper (LDRP) Lead‐Free Perovskite Solar Cells

et al. 2018

View full text Add to dashboard Cite

Low‐dimensional Ruddlesden–Popper (LDRP) lead‐free perovskite has great potential due to its improved stability and oriented crystal growth, which is mainly attributed to the effective control of crystallization kinetics. However, the crystallization kinetics of LDRP lead‐free perovskite films are highly limited by Lewis theory. Here, the management of the crystallization kinetics of LDRP tin (Sn) perovskite films jointly controlled by Lewis adducts and the ion exchange process using a mixture of polar aprotic solvent dimethyl sulfoxide (DMSO) and ion liquid solvent methylammonium acetate (MAAc) (the process named as “L‐I”) is demonstrated. Homogeneous nucleated LDRP Sn perovskite films with average grain size close to 9 µm are achieved. Both low electron and hole defect density with a magnitude of 1016, high carrier mobility, and excellent electrical performance are obtained. As a result, the LDRP Sn perovskite solar cell (PSC) with power conversion efficiency (PCE) of 4.03% is achieved using a simple one‐step method without antisolvents, which is one of the best LDRP Sn PSCs. Most importantly, the PSC exhibits excellent stability with no degradation in PCE after 94 d in a nitrogen atmosphere owing to the high‐quality film and the inhibition of the oxidation of Sn2+.

show abstract

“…This raises issues such as peripheral effects, measurement contacts, film uniformity, etc. [7][8][9][10]. Therefore, the development of large-area perovskite solar cells is very important for future commercialization.…”

Section: Introductionmentioning

confidence: 99%

Highly Uniform Large-Area (100 cm2) Perovskite CH3NH3PbI3 Thin-Films Prepared by Single-Source Thermal Evaporation

et al. 2018

View full text Add to dashboard Cite

Abstract:In this work, we report the reproducible preparation method of highly uniform large-area perovskite CH 3 NH 3 PbI 3 thin films by scalable single-source thermal evaporation with the area of 100 cm 2 . The microstructural and optical properties of large-area CH 3 NH 3 PbI 3 thin films were investigated. The dense, uniform, smooth, high crystallinity of large-area perovskite thin film was obtained. The element ratio of Pb/I was close to the ideal stoichiometric ratio of CH 3 NH 3 PbI 3 thin film. These films show a favorable bandgap of 1.58 eV, long and balanced carrier-diffusion lengths. The CH 3 NH 3 PbI 3 thin film perovskite solar cell shows a stable efficiency of 7.73% with almost no hysteresis, indicating a single-source thermal evaporation that is suitable for a large area perovskite solar cell.

show abstract

Stable high efficiency two-dimensional perovskite solar cells via cesium doping

Abstract: Cs+ doping into 2D (BA)2(MA)3Pb4I13 perovskites boosts power conversion efficiency (PCE) to 13.7% and yields superior humidity and thermal stability.

Cited by 619 publications

References 47 publications

Compositional and Solvent Engineering in Dion–Jacobson 2D Perovskites Boosts Solar Cell Efficiency and Stability

Compositional and Solvent Engineering in Dion–Jacobson 2D Perovskites Boosts Solar Cell Efficiency and Stability

Management of Crystallization Kinetics for Efficient and Stable Low‐Dimensional Ruddlesden–Popper (LDRP) Lead‐Free Perovskite Solar Cells

Highly Uniform Large-Area (100 cm2) Perovskite CH3NH3PbI3 Thin-Films Prepared by Single-Source Thermal Evaporation

Contact Info

Product

Resources

About