High-performance FAPbBr3 perovskite solar cells using dual-function bathocuproine interlayer for surface passivation and energy level alignment

Qian, Lei; Fu, Shanlin; Li, Shuang; Miao, Renjie; Feng, Xiaoming; Zhang, Wenjun; Xiao, Zhengguo; Wang, Weiyan; Song, Weijie

doi:10.1007/s10854-022-08663-2

Cited by 3 publications

(3 citation statements)

References 39 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…(a) Cross-sectional SEM image of the FAPbBr 3 quantum dot solar cell and its device architecture. (b) Energy level arrangement of the device . (c) J–V and (d) EQE curves of the best cells without (control) and with PbBr 2 passivation.…”

Section: Resultsmentioning

confidence: 99%

Dual Ions Passivating FAPbBr₃ Perovskite Quantum Dot Films via a Vacuum Drying Method for Stable and Efficient Solar Cells with an Ultrahigh Open-Circuit Voltage of over 1.67 V

Que

Zhang

Chen

et al. 2023

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

Defects located in the surface of quantum dots highly impact carrier dynamics and transfer, which would limit the photoelectric conversion efficiency (PCE) of perovskite quantum dot solar cells. Herein, we deposit high-quality FAPbBr 3 quantum dot films through passivating Pb salts and conducting damage-free drying processes. The results indicate that the process of PbBr 2 treatment and vacuum drying process fill both the Pb 2+ and Br − vacancies and minimize the damage of the FAPbBr 3 quantum dot film. The device assembled with this film achieved a champion PCE of 3.11% and involved an ultrahigh open-circuit voltage of 1.67 V or more. In addition, both the corresponding FAPbBr 3 quantum dot films and devices exhibited higher humidity stability than the control films and devices. These studies will provide insights for designing high-quality perovskite quantum dot films with superior optoelectronic properties.

show abstract

Section: Resultsmentioning

confidence: 99%

Dual Ions Passivating FAPbBr₃ Perovskite Quantum Dot Films via a Vacuum Drying Method for Stable and Efficient Solar Cells with an Ultrahigh Open-Circuit Voltage of over 1.67 V

Que

Zhang

Chen

et al. 2023

ACS Appl. Energy Mater.

View full text Add to dashboard Cite

show abstract

Section: Introductionmentioning

confidence: 99%

“…[4] However, the low PCE of FAPbBr 3 solar cells (SCs) seriously hinders their applications. Thus, many efforts have been made to improve the PCE of FAPbBr 3 SCs by additive engineering, [5] interface engineering, [6] and crystallization regulation. [7] For example, Ko et al added cesium bromide to regulate lattice interactions of FAPbBr 3 with preferred orientation and obtained 8.56% of a PCE due to the highquality crystalline film.…”

mentioning

confidence: 99%

δ‐Phase Management of FAPbBr₃ for Semitransparent Solar Cells

Zhu

et al. 2023

Advanced Optical Materials

View full text Add to dashboard Cite

ST-SCs due to proper band gap and stability. [4] However, the low PCE of FAPbBr 3 solar cells (SCs) seriously hinders their applications. Thus, many efforts have been made to improve the PCE of FAPbBr 3 SCs by additive engineering, [5] interface engineering, [6] and crystallization regulation. [7] For example, Ko et al. added cesium bromide to regulate lattice interactions of FAPbBr 3 with preferred orientation and obtained 8.56% of a PCE due to the highquality crystalline film. [8] Zhang et al. introduced guanidinium bromide to modulate the crystallization process, achieving a PCE of 8.92% with an open-circuit voltage (Voc) of 1.639 V for FAPbBr 3 SCs. [9] Liu et al. constructed 2D/3D perovskite interface by phenethylammonium bromide, which significantly passivated the interface defects and improved the PCE from 7.7% to 9.4%. [10] Although the PCE of FAPbBr 3 SCs has been improved, it is still unclear and rarely investigated on the effect of δ phase (δ-FAPbBr 3 ) on film and device properties. The photoinactive δ-FAPbBr 3 has a large band gap and chain structure, which may affect light absorption and carrier transport. [11] Therefore, the research on δ-FAPbBr 3 is of great significance for FAPbBr 3 SCs performance improvement.In this work, the key factors on the crystallization of δ-FAPbBr 3 and the effect of δ-FAPbBr 3 on device performance were systematically studied for the first time. The hydrophobic poly[bis(4phenyl) (2,4,6-trimethylphenyl) amine] (PTAA) underlayer induces random growth of δ-FAPbBr 3 and its aggregation at the bottom of the perovskite films, which bring more defects and hinder carrier transport. Contrarily, δ-FAPbBr 3 has more regular crystallization and uniform distribution on the hydrophilic (2-(9H-carbazol-9-yl) ethyl) phosphonic acid (2PACz) underlayer, which has less defect states and better carrier transport. By virtue of the management of δ-FAPbBr 3 and the passivation of the upper interface with a phosphonate/phosphine oxide dyad molecule (PE-TPPO), a PCE of 9.12% was obtained, which is the highest efficiency among the inverted FAPbBr 3 SCs. A ST-SC reached a LUE of 3.15% with a PCE of 7.44% and an AVT of 42.31%.

show abstract

Improved Hole‐Selective Contact Enables Highly Efficient and Stable FAPbBr₃ Perovskite Solar Cells and Semitransparent Modules

Zhu,

Xu,

Zhang

et al. 2024

Advanced Materials

View full text Add to dashboard Cite

Self‐assembled monolayers (SAMs) as the hole‐selective contact have achieved remarkable success in iodine‐based perovskite solar cells (PSCs), while their impact on bromine‐based PSCs is limited due to the poor perovskite crystallization behavior and mismatched energy level alignment. Here, a highly efficient SAM of (2‐(3,6‐diiodo‐9H‐carbazol‐9‐yl)ethyl)phosphonic acid (I‐2PACz) is employed to address these challenges in FAPbBr3‐based PSCs. The incorporation of I atoms into I‐2PACz not only releases tensile stress within FAPbBr3 perovskite, promoting oriented crystallization and minimizing defects through halogen‐halogen bond, but also optimizes the energy levels alignment at hole‐selective interface for enhanced hole extraction. Ultimately, a power conversion efficiency (PCE) of 11.14% is achieved, which stands among the highest reported value for FAPbBr3 PSCs. Furthermore, the semitransparent devices/modules exhibit impressive PCEs of 8.19% and 6.23% with average visible transmittance of 41.98% and 38.99%. Remarkably, after operating at maximum power point for 1000 h, the encapsulated device maintains 93% of its initial PCE. These results demonstrate an effective strategy for achieving high‐performance bromine‐based PSCs toward further applications.

show abstract

High-performance FAPbBr3 perovskite solar cells using dual-function bathocuproine interlayer for surface passivation and energy level alignment

Cited by 3 publications

References 39 publications

Dual Ions Passivating FAPbBr₃ Perovskite Quantum Dot Films via a Vacuum Drying Method for Stable and Efficient Solar Cells with an Ultrahigh Open-Circuit Voltage of over 1.67 V

Dual Ions Passivating FAPbBr₃ Perovskite Quantum Dot Films via a Vacuum Drying Method for Stable and Efficient Solar Cells with an Ultrahigh Open-Circuit Voltage of over 1.67 V

δ‐Phase Management of FAPbBr₃ for Semitransparent Solar Cells

Improved Hole‐Selective Contact Enables Highly Efficient and Stable FAPbBr₃ Perovskite Solar Cells and Semitransparent Modules

Contact Info

Product

Resources

About

High-performance FAPbBr3 perovskite solar cells using dual-function bathocuproine interlayer for surface passivation and energy level alignment

Cited by 3 publications

References 39 publications

Dual Ions Passivating FAPbBr3 Perovskite Quantum Dot Films via a Vacuum Drying Method for Stable and Efficient Solar Cells with an Ultrahigh Open-Circuit Voltage of over 1.67 V

Dual Ions Passivating FAPbBr3 Perovskite Quantum Dot Films via a Vacuum Drying Method for Stable and Efficient Solar Cells with an Ultrahigh Open-Circuit Voltage of over 1.67 V

δ‐Phase Management of FAPbBr3 for Semitransparent Solar Cells

Improved Hole‐Selective Contact Enables Highly Efficient and Stable FAPbBr3 Perovskite Solar Cells and Semitransparent Modules

Contact Info

Product

Resources

About

Dual Ions Passivating FAPbBr₃ Perovskite Quantum Dot Films via a Vacuum Drying Method for Stable and Efficient Solar Cells with an Ultrahigh Open-Circuit Voltage of over 1.67 V

Dual Ions Passivating FAPbBr₃ Perovskite Quantum Dot Films via a Vacuum Drying Method for Stable and Efficient Solar Cells with an Ultrahigh Open-Circuit Voltage of over 1.67 V

δ‐Phase Management of FAPbBr₃ for Semitransparent Solar Cells

Improved Hole‐Selective Contact Enables Highly Efficient and Stable FAPbBr₃ Perovskite Solar Cells and Semitransparent Modules