Functional Analysis and Instructive Selection of a Green Additive Achieve Dual-Interface Modification for Fabricating Self-Powered, High-Performance Perovskite Photodetectors DOI
Yong Wang, Guangsheng Liu, Feng Lin

и другие.

ACS Photonics, Год журнала: 2024, Номер 12(1), С. 128 - 139

Опубликована: Дек. 27, 2024

The guanidine compound has recently been demonstrated to be effective in passivating interface defects and enhancing the performance stability of perovskite photodetectors (PPDs). However, selection utilization these compounds are conducted without comprehensive guidance due an insufficient understanding mechanisms functions their functional groups. Herein, we evaluated defect passivation capabilities acid (Gua) by analyzing its electrostatic potential molecular orbitals then applied it at all-inorganic SnO2 films. smoother morphology, larger crystal, improved optoelectronic properties Gua-modified films suppressing Gua. Moreover, systematic experiment calculation analyses have revealed that –C═NH group, with a higher electron cloud density, not only plays dominant role healing oxygen vacancies, free hydroxyl groups, Sn-related on surface but also passivates Pb2+ X– interface. Consequently, PPDs achieve exceptional detectivity 1.32 × 1013 Jones, responsivity 0.30 A/W, minimal dark current 1.55 10–9 A/cm2. This work provided valuable insights for customizing Lewis base molecules crucial groups universal strategy estimate select organic photoelectronic devices.

Язык: Английский

Improvement of Photovoltaic Performance of Perovskite Solar Cells by Synergistic Modulation of SnO2 and Perovskite via Interfacial Modification DOI

Jinliang Shen,

Xiang Ge,

Qing Ge

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(19), С. 24748 - 24759

Опубликована: Май 1, 2024

In the past decade, perovskite solar cell (PSC) photoelectric conversion efficiency has advanced significantly, and tin dioxide (SnO2) been extensively used as electron transport layer (ETL). Due to its high mobility, strong chemical stability, energy level matching with perovskite, easy low-temperature fabrication, SnO2 is one of most effective ETL materials. However, material an limitations. For example, films prepared by spin-coating contain a large number oxygen vacancies, resulting in loss open-circuit voltage (VOC) loss. addition, crystal quality perovskites closely related substrate, disordered orientation will lead ion migration, uncoordinated Pb2+ defects. Therefore, interface optimization essential improve stability PSC. this work, 2-(5-chloro-2-benzotriazolyl)-6-tert-butyl-p-cresol (CBTBC) was introduced for modification. On hand, hydroxyl group CBTBC forms Lewis mixture Sn atom, which reduces vacancy defect prevents nonradiative recombination. other SnO2/CBTBC can effectively influencing crystallization kinetics nitrogen element passivate defects at SnO2/perovskite interface. Finally, prevailing PCE PSC (1.68 eV) modified 20.34% (VOC = 1.214 V, JSC 20.49 mA/cm2, FF 82.49%).

Язык: Английский

Процитировано

9
Ce-Doped SnO2 Electron Transport Layer for Minimizing Open Circuit Voltage Loss in Lead Perovskite Solar Cells DOI
Shamim Ahmmed, Yulu He, Md. Emrul Kayesh

и другие.

ACS Applied Materials & Interfaces, Год журнала: 2024, Номер 16(25), С. 32282 - 32290

Опубликована: Июнь 12, 2024

In the planar heterostructure of perovskite-based solar cells (PSCs), tin oxide (SnO2) is a material that often used as electron transport layer (ETL). SnO2 ETL exhibits favorable optical and electrical properties in PSC structures. Nevertheless, open circuit voltage (VOC) depletion occurs PSCs due to defects arising from high oxygen vacancy on surface deeper conduction band (CB) energy level SnO2. this research, cerium (Ce) dopant was introduced (Ce-SnO2) suppress VOC loss PSCs. The CB minimum shifted closer perovskite after Ce doping. Besides, doping effectively passivated well improved velocity by Ce-SnO2. These results enabled power conversion efficiency (PCE) increase 21.1% 23.0% (0.09 cm2 active area) with around 100 mV reduced hysteresis. Also, Ce-SnO2 ETL-based large area (1.0 cm2) delivered highest PCE 22.9%. Furthermore, 1.19 V 23.3% demonstrated were treated 2-phenethylamine hydroiodide top surface. Notably, unencapsulated able maintain above 90% its initial for 2000 h which stored under room temperature condition (23–25 °C) relative humidity 40–50%.

Язык: Английский

Процитировано

4
Alkyl Fluoride Modification‐Enhanced Intermolecular Interactions of Phenoxazine‐Based Hole‐Transporting Materials for Efficient and Stable Inverted Perovskite Solar Cells DOI Open Access

Tonghui Hu,

Yu Chen,

Ruixi Luo

и другие.

Solar RRL, Год журнала: 2025, Номер unknown

Опубликована: Янв. 8, 2025

Delicate regulation of halogens in conjugated molecules has emerged as a major strategy to modulate the aggregation organic semiconductor materials for considerable enhancement photovoltaic performance. Herein, three donor–π–donor hole‐transporting materials, B 6 P ‐F , ‐Cl, and ‐Br containing 4,8‐bis(hexyloxy)benzo[1,2‐b:4,5‐b′]dithiophene π‐conjugated linker 10‐(6‐fluorohexyl)‐10 H ‐phenoxazine, 10‐(6‐chlorohexyl)‐10 10‐(6‐bromohexyl)‐10 ‐phenoxazine respectively, donor units, are reported. Differential scanning calorimetry curves, atomic force microscopy, contact angle measurements with perovskite precursors collectively reveal that halogenated alkyl chains attached units influence molecular packing patterns subsequently alter surface interface properties resulting films. Analysis Fourier‐transform infrared absorption spectra implies distinctive may originate from its intermolecular F···π interactions. Benefiting interactions favorable self‐assembly, inverted PSCs based on exhibit decent power conversion efficiency 20.85%, outperforming ‐Cl . Further analysis steady‐state/transient photoluminescence spectra, electrochemical impedance spectroscopy, light intensity‐dependent short‐circuit photocurrent, open‐circuit voltage ( V oc ) indicates distinct assembly facilitated by interactions, enhances efficient interfacial charge transport extraction while suppressing unfavorable recombination, thereby increasing fill factor.

Язык: Английский

Процитировано

0
Enhancing efficiency and stability of perovskite solar cells via DB24C8 dual-sided passivation at the ETL/PVSK interface DOI
Rui-Yun Hsu,

Chieh Chen,

Bing-Chwen Yang

и другие.

Materials Science in Semiconductor Processing, Год журнала: 2025, Номер 197, С. 109709 - 109709

Опубликована: Май 24, 2025

Язык: Английский

Процитировано

0
Effect of the Hammett substituent constant of para-substituted benzoic acid on the perovskite/SnO2 interface passivation in perovskite solar cells DOI
Ki-Nam Hong, Sanguk Lee, Chunyang Zhang

и другие.

Nanoscale, Год журнала: 2024, Номер 16(30), С. 14287 - 14294

Опубликована: Янв. 1, 2024

The positive Hammett substituent constant of para-substituted benzoic acids is found to be more effective than the negative one in passivating perovskite/SnO 2 interface perovskite solar cells.

Язык: Английский

Процитировано

1
Recent Progress of Buried Interface in High-Efficiency and Stable Perovskite Solar Cells DOI
Bin Du, Jintao Ma,

Hongkun Xiang

и другие.

Chemical Communications, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

Recent advances in the development of multiple classes materials applied to buried interface engineering for highly efficient and stable perovskite solar cells, including organic, inorganic, polymeric materials.

Язык: Английский

Процитировано

0
Functional Analysis and Instructive Selection of a Green Additive Achieve Dual-Interface Modification for Fabricating Self-Powered, High-Performance Perovskite Photodetectors DOI
Yong Wang, Guangsheng Liu, Feng Lin

и другие.

ACS Photonics, Год журнала: 2024, Номер 12(1), С. 128 - 139

Опубликована: Дек. 27, 2024

The guanidine compound has recently been demonstrated to be effective in passivating interface defects and enhancing the performance stability of perovskite photodetectors (PPDs). However, selection utilization these compounds are conducted without comprehensive guidance due an insufficient understanding mechanisms functions their functional groups. Herein, we evaluated defect passivation capabilities acid (Gua) by analyzing its electrostatic potential molecular orbitals then applied it at all-inorganic SnO2 films. smoother morphology, larger crystal, improved optoelectronic properties Gua-modified films suppressing Gua. Moreover, systematic experiment calculation analyses have revealed that –C═NH group, with a higher electron cloud density, not only plays dominant role healing oxygen vacancies, free hydroxyl groups, Sn-related on surface but also passivates Pb2+ X– interface. Consequently, PPDs achieve exceptional detectivity 1.32 × 1013 Jones, responsivity 0.30 A/W, minimal dark current 1.55 10–9 A/cm2. This work provided valuable insights for customizing Lewis base molecules crucial groups universal strategy estimate select organic photoelectronic devices.

Язык: Английский

Процитировано

0