Methylammonium Chloride as a Double‐Edged Sword for Efficient and Stable Perovskite Solar Cells

Li, Bo; Wang, Huayan; Liu, Aqiang; Liu, Yang; Pu, Wei; Shen, Ting; Li, Mengjie; Que, Meidan; Tian, Jianjun; Dai, Qilin; Yun, Sining

doi:10.1002/smll.202301061

Cited by 4 publications

(1 citation statement)

References 53 publications

(29 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the light intensity dependence of J SC as shown in Figure 4d, the index factors of the Glu-based device and control device are 0.92 and 0.90, respectively. 35,37 When the exponential factor is closer to 1, the bimolecular recombination in the device is suppressed. The space current limited charge (SCLC) characterization was used to calculate the trap state density of FAPbI 3 solid films with or without Glu solutionphase ligand exchange.…”

Section: ■ Introductionmentioning

confidence: 99%

Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI₃ Perovskite Quantum Dot Solar Cells

Que,

Yuan,

et al. 2024

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

Formamidinium lead triiodide (FAPbI 3 ) perovskite quantum dot has outstanding durability, reasonable carrier lifetime, and long carrier diffusion length for a new generation of highly efficient solar cells. However, ligand engineering is a dilemma because of the highly ionized and dynamic characteristics of quantum dots. To circumvent this issue, herein, we employed a mild solution-phase ligand-exchange approach through adding short-chain amino acids that contain amino and carboxyl groups to modify quantum dots and passivate their surface defects during the purification process. As a result, the photoelectric conversion efficiency of FAPbI 3 perovskite quantum dot solar cells (PQDSCs) increased from 11.23 to 12.97% with an open-circuit voltage of 1.09 V, a short-circuit current density of 16.37 mA cm −2 , and a filling factor of 72.13%. Furthermore, the stability of the device modified by amino acids retains over 80% of the initial efficiency upon being exposed to 20−30% relative humidity for 240 h of aging treatment. This work may offer an innovative concept and approach for surface ligand treatment to improve the photovoltaic performance of PQDSCs toward large-scale manufacture.

show abstract

Section: ■ Introductionmentioning

confidence: 99%

Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI₃ Perovskite Quantum Dot Solar Cells

Que,

Yuan,

et al. 2024

ACS Appl. Mater. Interfaces

Self Cite

View full text Add to dashboard Cite

show abstract

Gel‐Derived Amorphous Precursor Enables Homogeneous Pure‐Phase α‐FAPbI₃ Films for Efficient and Stable Perovskite Solar Cells

Li,

Liu,

et al. 2024

Adv Funct Materials

Self Cite

View full text Add to dashboard Cite

Pure‐phase α‐formamidinium lead iodide (α‐FAPbI3) perovskite solar cells (PSCs) possess potential high efficiency because of suitable bandgap. However, achieving high‐quality α‐FAPbI3 films during the spin‐coating process is challenging without anti‐solvent extraction, due to the spontaneous formation of the more stable δ‐FAPbI3 phase and the complexity of multi‐component perovskite precursor solutions. Here a gel precursor with an amorphous structure to eliminate the need for anti‐solvent extraction in achieving the homogeneous and highly oriented pure‐phase α‐FAPbI3 is devised films. The incorporation of N,N′‐dimethylpropyleneurea, and alkylammonium chloride results in extended iodoplumbate clusters in the perovskite precursor solution. In situ, spectroscopic analysis reveals that the emergence of the stable amorphous gel precursor during the initial solidification stage ensures a uniform solute distribution. This effectively prevents preferentially oriented growth in the crystal phase precursor, leading to a significant enhancement in film homogeneity. As a result, power conversion efficiencies of 24.17% for the PSC, and 19.3% for the module are achieved, along with superior operational stability, retaining 96.1% of their initial efficiency after 850 h at the maximum power point tracking. These demonstrate the best performance for the reported pure‐phase α‐FAPbI3 PSCs without anti‐solvent extraction, showing great promise for scalable manufacture.

show abstract

Chloride Engineering for Boosting Perovskite Photovoltaics: Impact on Precursor Coordination, Crystallization, and Film Quality

Li,

Pu,

Zhang

et al. 2024

Small

View full text Add to dashboard Cite

Perovskite solar cells (PSCs) have seen rapid advancements over the past decade, driven by their exceptional optoelectronic properties and high power conversion efficiencies. Cl‐based additives strategy has significantly contributed to these advancements by enhancing crystallinity, improving preferred orientation, and optimizing the surface morphology of perovskite films. This review provides a comprehensive summary of recent advancements and insights into the critical role of Cl‐based additives in perovskite photovoltaics, focusing on the mechanisms behind Cl incorporation and its effects on film and device performance. First, the impact of Cl on precursor solution coordination and colloidal characteristics is discussed. Then, how Cl‐based additives influence the phase transitions of perovskites, including methylammonium lead iodide (MAPbI3), formamidinium lead iodide (FAPbI3), and 2D perovskites is examined. Furthermore, the impact of Cl‐based interfacial treatments on perovskite film quality is explored. Based on these insights, the overall impact of Cl treatments is also reviewed on the properties of perovskite films. Finally, a brief overview of the remaining challenges and future perspectives are provided to guide ongoing research efforts toward optimizing Cl additive engineering for high‐performance PSCs.

show abstract

Methylammonium Chloride as a Double‐Edged Sword for Efficient and Stable Perovskite Solar Cells

Cited by 4 publications

References 53 publications

Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI₃ Perovskite Quantum Dot Solar Cells

Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI₃ Perovskite Quantum Dot Solar Cells

Gel‐Derived Amorphous Precursor Enables Homogeneous Pure‐Phase α‐FAPbI₃ Films for Efficient and Stable Perovskite Solar Cells

Chloride Engineering for Boosting Perovskite Photovoltaics: Impact on Precursor Coordination, Crystallization, and Film Quality

Contact Info

Product

Resources

About

Methylammonium Chloride as a Double‐Edged Sword for Efficient and Stable Perovskite Solar Cells

Cited by 4 publications

References 53 publications

Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI3 Perovskite Quantum Dot Solar Cells

Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI3 Perovskite Quantum Dot Solar Cells

Gel‐Derived Amorphous Precursor Enables Homogeneous Pure‐Phase α‐FAPbI3 Films for Efficient and Stable Perovskite Solar Cells

Chloride Engineering for Boosting Perovskite Photovoltaics: Impact on Precursor Coordination, Crystallization, and Film Quality

Contact Info

Product

Resources

About

Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI₃ Perovskite Quantum Dot Solar Cells

Amino Acid Double-Passivation-Enhanced Quantum Dot Coupling for High-Efficiency FAPbI₃ Perovskite Quantum Dot Solar Cells

Gel‐Derived Amorphous Precursor Enables Homogeneous Pure‐Phase α‐FAPbI₃ Films for Efficient and Stable Perovskite Solar Cells