Enhanced performance of perovskite solar cells by the incorporation of the luminescent small molecule DBP: perovskite absorption spectrum modification and interface engineering

Ding, Saisai; Li, Shiqi; Sun, Qinjun; Wu, Yukun; Liu, Yifan; Li, Zhanfeng; Cui, Yanxia; Wang, Hua; Hao, Yuying; Wu, Yucheng

doi:10.1039/c9tc00064j

Cited by 31 publications

(10 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This result shows that the GA‐RPP leads to more positive surface potential, which could be attributed to the secondary phase formed on the perovskite surface. [ 41 ] These results are consistent with the previous report [ 42 ] ; the surface potential change can be caused by the upward shift of the electron quasi‐Fermi level (E Qf ) due to the secondary phase formation. These results are consistent with the work function (WF) change of the perovskite films based on CP, and the GA‐RPP analyzed by UPS, as shown in Figure 4c.…”

Section: Resultssupporting

confidence: 92%

See 1 more Smart Citation

Enhanced Performance of Perovskite Solar Cells via Reactive Post‐treatment Process Utilizing Guanidine Acetate as Interface Modifier

et al. 2021

View full text Add to dashboard Cite

Organic–inorganic lead halide perovskites (OIHPs) have emerged as promising materials for next‐generation photovoltaics. However, performance improvements in the perovskite‐based device are still limited due to defects that exist more intensively on the surface as well as grain boundaries (GBs) and mismatching energy levels at the interface. Herein, a reactive post‐treatment process (RPP) using guanidine acetate (GA) is adopted to address defects and interfacial energy level matching at the perovskite surface. The RPP with GA (GA‐RPP) results in the formation of an improved perovskite layer with large grain size and low GB density, leading to the formation of secondary phases on the perovskite surface with appropriate energy levels, resulting in reduced defect density and charge recombination. Furthermore, density functional theory analysis reveals that the Pb‐rich secondary phase could improve the conduction of electrons at the perovskite interface. Therefore, the GA‐RPP‐based perovskite‐based solar cell (PSC) shows enhanced performance with 20.4% efficiency and long‐term stability.

show abstract

Section: Resultssupporting

confidence: 92%

“…An increase in the E Qf can lead to an increase in the built‐in electric field and ultimately to an increase in the open‐circuit voltage ( V OC ) of PSCs. [ 41 ]…”

Section: Resultsmentioning

confidence: 99%

Enhanced Performance of Perovskite Solar Cells via Reactive Post‐treatment Process Utilizing Guanidine Acetate as Interface Modifier

et al. 2021

View full text Add to dashboard Cite

show abstract

“…DBP has a deep lying HOMO level of − 5.5 eV and a LUMO level of − 3.5 eV, matching well to several electron acceptor materials, and it has a strong absorption wavelength in the visible region from 300 to 700 nm [34]. Recently, it was also introduced to the perovskite device fabrication [35], where the hole transport properties of the molecule can also make it well-suited as an interlayer.…”

Section: Resultsmentioning

confidence: 99%

Dibenzo-tetraphenyl diindeno perylene as hole transport layer for high-bandgap perovskite solar cells

et al. 2020

View full text Add to dashboard Cite

Semi-transparent perovskite solar cells have the competitive edge of being employed for building integrated photovoltaics due to their esthetic benefits as light harvesting windows/facades. Perovskites have received considerable attention in recent years as a thin film photovoltaic alternative, that can also be tweaked for its transparency, evolving from potentially high bandgaps that are suited for semi-transparent solar cell fabrication. Due to the existing trade of between the efficiency and transparency of a perovskite solar cell, tuning the band gap can address this by making a bridge between the aforementioned parameters. We report our findings on the use of a wide-bandgap perovskite MAPbBr 3 , with a rational energetic level hole transport materials based on polycyclic aromatic hydrocarbon molecules that can be a promising alternative class of p-type material. In the present work, DBP (Dibenzo{[f,f′]-4,4′,7,7′-tetraphenyl}diindeno[1,2,3-cd :1′,2′,3′-lm]perylene was evaluated with high bandgap as well as with mixed (FAPbI 3 ) 0.85 (MAPbBr 3 ) 0.15 perovskites for the fabrication of solar cell. DBP-based solar cells yielded competitive power conversion efficiencies as compared with classical HTMs.

show abstract

“…DBP has a deep lying HOMO level of -5.5 eV and a LUMO level of -3.5 eV, matching well to several electron acceptor materials, and it has a strong absorption wavelength in the visible region from 300 − 700 nm [35]. Recently, it was also introduced to the perovskite device fabrication [36], where the hole transport properties of the molecule can also make it well-suited as an interlayer. The UV-vis absorbance spectra of the DBP in chlorobenzene (Fig.…”

Section: Resultsmentioning

confidence: 99%

Dibenzo-Tetraphenyl Diindeno as Hole Transport Layer for Perovskite Solar Cells Fabrication

Pegu¹,

Calió²,

Ahmadpour³

et al. 2020

Preprint

View full text Add to dashboard Cite

Semi-transparent perovskite solar cells have the competitive edge of being employed for building integrated photovoltaics due to their aesthetic benefits as light harvesting windows / facades.Perovskites have received considerable attention in recent years as a thin film photovoltaic alternative, that can also be tweaked for its transparency, evolving from potentially high bandgaps that are suited for semi-transparent solar cell fabrication. Due to the existing trade of between the efficiency and transparency of a perovskite solar cell, tuning the band gap can address this by making a bridge between the aforementioned parameters. We report our findings on the use of a wide-bandgap perovskite MAPbBr3, with a rational energetic level hole transport materials based on polycyclic aromatic hydrocarbon molecules that can be a promising alternative class of p-type material. In the present work, DBP (Dibenzo{[f,4',7,2,2',perylene, was evaluated with high band gap as well as with (FAPbI3)0.85(MAPbBr3)0.15 perovskites for the fabrication of solar cell. DBP based solar cells yielded competitive power conversion efficiencies as compared to classical HTMs.

show abstract

Enhanced performance of perovskite solar cells by the incorporation of the luminescent small molecule DBP: perovskite absorption spectrum modification and interface engineering

Abstract: Luminescent organic small molecule DBP ultrathin layer were incorporated into the interface between perovskite and electron transport layer for high efficiency and stability PSCs by absorption spectrum modification and interface engineering.

Cited by 31 publications

References 30 publications

Enhanced Performance of Perovskite Solar Cells via Reactive Post‐treatment Process Utilizing Guanidine Acetate as Interface Modifier

Enhanced Performance of Perovskite Solar Cells via Reactive Post‐treatment Process Utilizing Guanidine Acetate as Interface Modifier

Dibenzo-tetraphenyl diindeno perylene as hole transport layer for high-bandgap perovskite solar cells

Dibenzo-Tetraphenyl Diindeno as Hole Transport Layer for Perovskite Solar Cells Fabrication

Contact Info

Product

Resources

About