Green‐solvent Processable Dopant‐free Hole Transporting Materials for Inverted Perovskite Solar Cells DOI
Xinyu Yu, Danpeng Gao, Zhen Li

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(11)

Published: Jan. 17, 2023

Abstract The commercialization of perovskite solar cells (PVSCs) urgently requires the development green‐solvent processable dopant‐free hole transporting materials (HTMs). However, strong intermolecular interactions that ensure high mobility always compromise solubility and film‐forming ability in green solvents. Herein, we show a simple but effective design strategy to solve this trade‐off, is, constructing star‐shaped D‐A‐D structure. resulting HTMs (BTP1‐2) can be processed by solvent 2‐methylanisole (2MA), kind food additive, multiple defect passivation effects. An impressive efficiency 24.34 % has been achieved for 2MA‐processed BTP1 based inverted PVSCs, highest value so far. Moreover, it is manifested charge separation D‐A type at photoinduced excited state help passivate defects perovskites, indicating new HTM insight.

Language: Английский

Rational molecular design of multifunctional self-assembled monolayers for efficient hole selection and buried interface passivation in inverted perovskite solar cells DOI Creative Commons
Wenlin Jiang, Ming Liu, Yanxun Li

et al.

Chemical Science, Journal Year: 2024, Volume and Issue: 15(8), P. 2778 - 2785

Published: Jan. 1, 2024

Self-assembled monolayers (SAMs) have been widely employed as the bottom-contact hole-selective layer (HSL) in inverted perovskite solar cells (PSCs). Besides manipulating electrical properties, molecularly engineering SAM provides an opportunity to modulate buried interface. Here, we successfully introduced Lewis-basic oxygen and sulfur heteroatoms through rational molecular design of asymmetric SAMs obtain two novel multifunctional SAMs, CbzBF CbzBT. Detailed characterization single-crystal structures device interfaces shows that enhanced packing, more effective ITO work function adjustment, interface passivation were achieved. Consequently, champion PSC employing CbzBT showed excellent power conversion efficiency (PCE) 24.0% with a high fill factor 84.41% improved stability. This demonstrates feasibility introducing defect-passivating heterocyclic groups into molecules help passivate interfacial defects PSCs. The insights gained from this strategy will accelerate development new HSLs for efficient

Language: Английский

Citations

53

Tailoring Multifunctional Self‐Assembled Hole Transporting Molecules for Highly Efficient and Stable Inverted Perovskite Solar Cells DOI
Rui Guo, Xiaoru Zhang, Xin Zheng

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(10)

Published: Jan. 29, 2023

Abstract The self‐assembled hole transporting molecules (SAHTMs) bearing anchoring groups have been established as the layers (HTLs) for highly efficient p–i–n perovskite solar cells (PSCs), yet their stability and engineering at molecular level remain challenging. A topological design of anisotropic aligned SAHTM‐based HTLs operationally stable PSCs that exhibit exceptional solar‐to‐electric power conversion efficiencies (PCEs) is demonstrated. judiciously designed multifunctional comprise donor–acceptor subunit phosphonic acid group anchoring, realizing face‐on π‐stacking parallel to transparent conductive oxide substrate. high affinity SAHTMs multi‐crystalline thin film benefits passivating buried interface, strengthening interfacial contact while facilitating transfer. Consequently, PSC devices are obtained with a champion PCE 23.24% outstanding operational toward various environmental factors including long‐term full sunlight soaking evaluated temperatures. Perovskite modules efficiency approaching 20% also fabricated an active device area above 17 cm 2 .

Language: Английский

Citations

52

Quinoxaline‐Based X‐Shaped Sensitizers as Self‐Assembled Monolayer for Tin Perovskite Solar cells DOI
Shakil N. Afraj, Chun‐Hsiao Kuan,

J.-C. Lin

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(17)

Published: Feb. 23, 2023

Abstract Four X‐shaped quinoxaline‐based organic dyes, PQx (1), TQx, (2), PQxD (3), and TQxD (4) (D = dye sensitizers) are developed served as p ‐type self‐assemble monolayer (SAM) for tin perovskite solar cells (TPSC). Thermal, optical, electrochemical properties of these SAMs thoroughly investigated characterized. Tin layers successfully deposited on four SAM surfaces according to a two‐step approach the devices exhibit power conversion efficiency in order (8.3%) > TQx (8.0%) (7.1%) (6.1%). With thiophene π‐extended conjugation unit structure, exhibits highest hole extraction rates, greatest mobilities, slowest charge recombination achieve great device performance 8.3%, which is current best result SAM‐based TPSC ever reported. Furthermore, all except shows enduring stability retaining ≈90% their original values shelf storage over 1600 h.

Language: Английский

Citations

51

Methods for Passivating Defects of Perovskite for Inverted Perovskite Solar Cells and Modules DOI Creative Commons
Jiarong Wang, Le‐Yu Bi, Qiang Fu

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: 14(35)

Published: June 27, 2024

Abstract Inverted perovskite solar cells (PSCs) have attracted considerable attention due to their distinct advantages, including minimal hysteresis, cost‐effectiveness, and suitability for tandem applications. Nevertheless, the solution processing low formation energy of perovskites inevitably lead numerous defects formed at both bulk interfaces layer. These can act as non‐radiative recombination centers, significantly impeding carrier transport posing a substantial obstacle stability further enhancing power conversion efficiency (PCE). This review delves into detailed discussion nature origin characterization techniques employed defect identification. Furthermore, it systematically summarizes methods detection approaches passivating interface within film in inverted PSCs. Finally, this offers perspective on employing upscaling passivation engineering modules. It is hoped provides insights PSCs

Language: Английский

Citations

51

Green‐solvent Processable Dopant‐free Hole Transporting Materials for Inverted Perovskite Solar Cells DOI
Xinyu Yu, Danpeng Gao, Zhen Li

et al.

Angewandte Chemie International Edition, Journal Year: 2023, Volume and Issue: 62(11)

Published: Jan. 17, 2023

Abstract The commercialization of perovskite solar cells (PVSCs) urgently requires the development green‐solvent processable dopant‐free hole transporting materials (HTMs). However, strong intermolecular interactions that ensure high mobility always compromise solubility and film‐forming ability in green solvents. Herein, we show a simple but effective design strategy to solve this trade‐off, is, constructing star‐shaped D‐A‐D structure. resulting HTMs (BTP1‐2) can be processed by solvent 2‐methylanisole (2MA), kind food additive, multiple defect passivation effects. An impressive efficiency 24.34 % has been achieved for 2MA‐processed BTP1 based inverted PVSCs, highest value so far. Moreover, it is manifested charge separation D‐A type at photoinduced excited state help passivate defects perovskites, indicating new HTM insight.

Language: Английский

Citations

50