Multifunctional Surface Modification of Carbon-Based All-Inorganic Cspbi2br Solar Cells by 3-(Trifluoromethyl) Phenyltrimethyl Ammonium Iodide DOI
Lin Gao, Fengli Liu, Ruoshui Li

et al.

Published: Jan. 1, 2023

The preparation process of carbon-electrode perovskite solar cells (C-PSCs) without hole transport layers (HTLs) is simple, cost-effective, and the as-prepared C-PSCs exhibit excellent thermal stability. However, there are numerous defects at interfaces grain boundaries. Due to presence these defect states, non-radiative recombination charge carriers occurs, ultimately resulting in significant VOC (voltage open circuit) loss an energy level mismatch between device structures, which seriously affect photoelectric conversion efficiency (PCE) stability C-PSCs. Therefore, this work uses 3-(trifluoromethyl)-phenyltrimethyl-ammonium iodide (TFPTAI) as a surface modifier modify CsPbI2Br. strong electronegativity fluorine atoms (F), acting electron-withdrawing groups, they promote separation positive negative centers molecule. This, turn, can effectively induce binding ammonium cations (NH+) with negatively charged defects, consequently suppressing carriers. In addition, thanks ordered arrangement F atoms, hydrophobic protective umbrella constructed on layer, improving device. highest PCE 14.02%, surpassing optimal original 12.46%. Simultaneously, surface-modified exhibits environmental

Language: Английский

Multifunctional Small Molecule as Buried Interface Passivator for Efficient Planar Perovskite Solar Cells DOI

Meizi Wu,

Yuwei Duan, Lu Yang

et al.

Advanced Functional Materials, Journal Year: 2023, Volume and Issue: 33(22)

Published: March 2, 2023

Abstract The improvement of power conversion efficiency (PCE) and stability the perovskite solar cell (PSC) is hindered by carrier recombination originating from defects at buried interface PSC. It crucial to suppress nonradiative facilitate transfer in PSC via engineering. Herein, P‐biguanylbenzoic acid hydrochloride (PBGH) developed modify tin oxide (SnO 2 )/perovskite interface. effects PBGH on transportation, growth, defect passivation, performance are systematically investigated. On one hand, can effectively passivate trap states Sn dangling bonds O vacancies SnO surface Lewis acid/base coordination, which conducive improving conductivity film accelerating electron extraction. other modification assists formation high‐quality with low density due its strong interaction PbI . Consequently, PBGH‐modified exhibits a champion 24.79%, highest PCEs among all FACsPbI 3 ‐based PSCs reported date. In addition, stabilities films devices under high temperature/humidity light illumination conditions also studied.

Language: Английский

Citations

84
Inhibited superoxide‐induced halide oxidation with a bioactive factor for stabilized inorganic perovskite solar cells DOI Creative Commons
Xingxing Duan, Jialong Duan,

Naimin Liu

et al.

SusMat, Journal Year: 2024, Volume and Issue: 4(4)

Published: July 29, 2024

Abstract Active oxygen highly affects the efficiency and stability of perovskite solar cells (PSCs) owing to capacity either passivate defects or decompose lattice. To better understand in‐depth interaction, we demonstrate for first time that photooxidation mechanism in all‐inorganic film dominates phase deterioration kinetics by forming superoxide species presence light oxygen, which is significantly different from organic‒inorganic hybrid even tin‐based perovskites. In perovskites, prefer oxidize longer weaker Pb‒I bond PbO I 2 , leaving much stable CsPbBr 3 phase. From this chemical proof‐of‐concept, employ an organic bioactive factor, Tanshinone IIA, as a sweeper enhance environmental tolerance inorganic perovskite, serving “skincare” agent anti‐aging organisms. Combined with another key point on healing defective lattice, best carbon‐based CsPbI Br cell delivers high 15.12% superior against light, humidity, heat attacks. This method also applicable p‒i‒n inverted (Cs 0.05 MA FA 0.9 )Pb(I 0.93 0.07 ) 23.46%. These findings not only help us decomposition mechanisms depth but provide potential strategy advanced PSC platforms.

Language: Английский

Citations

9
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

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(19), P. 24748 - 24759

Published: May 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%).

Language: Английский

Citations

7
Regulating the Interplay at the Buried Interface for Efficient and Stable Carbon-Based CsPbI2Br Perovskite Solar Cells DOI
Dan Zhang, Xiang Zhang, Tonghui Guo

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(8), P. 10897 - 10906

Published: Feb. 14, 2023

Buried interface modification is promising for preparing high-performance perovskite solar cells (PSCs) by improving the film quality and adjusting interfacial energy level alignment. In this work, multifunctional ethylenediaminetetraacetic acid diammonium (EAD)-modulated ZnO employed as an effective buried to regulate interplay between SnO2 CsPbI2Br in carbon-based inorganic PSCs (C-IPSCs). The burying of EAD into interlayer not only enhances photoelectric properties passivating oxygen defects but also adjusts alignment interface. More importantly, optimized are passivated due formation coordination hydrogen bondings. Benefiting from such a robust efficient charge transfer configuration, maximum power conversion efficiency 14.58% achieved device, which represents highest performance reported among those low-temperature C-IPSCs. addition, unencapsulated device demonstrates better long-term thermal stability.

Language: Английский

Citations

16
Targeting the imperfections at the ZnO/CsPbI2Br interface for low-temperature carbon-based perovskite solar cells DOI
Xiang Zhang, Dan Zhang, Tonghui Guo

et al.

Journal of Materials Chemistry A, Journal Year: 2023, Volume and Issue: 11(17), P. 9616 - 9625

Published: Jan. 1, 2023

In this work, cesium salts with functional anions of acetate (Ac − ), fluoride (F ) and trifluoroacetate (TFA are explored to modulate the deposition ZnO films in low-temperature carbon-based CsPbI 2 Br perovskite solar cells.

Language: Английский

Citations

16
Columnar Macrocyclic Molecule Tailored Grain Cage to Stabilize Inorganic Perovskite Solar Cells with Suppressed Halide Segregation DOI

Naimin Liu,

Jialong Duan, Hui Li

et al.

Advanced Energy Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 2, 2024

Abstract Solidifying the soft lattice of all‐inorganic mixed‐halide perovskites is great importance to restrain notorious halide segregation under persistent light illumination. Herein, a multifunctional columnar macrocyclic molecule additive, namely cucurbituril into perovskite precursor enhance crystallization and reduce defect density in final film introduced. Based on theoretical calculation simulation, with strong double‐ended negatively‐charged cavity surrounded by terminated oxygen atoms not only coordinates dangling Pb 2+ ions form host‐guest complexation but also induces an electric dipole field at grain boundary effectively repel iodide ion migration from inside defective boundary, significantly suppressing improving device performance. As result, carbon‐based, CsPbI 2 Br solar cell achieves enhanced efficiency 15.59% tolerance environmental stresses. These findings provide new insights development novel passivation strategy molecules for making high‐efficiency stable cells.

Language: Английский

Citations

5
Defect passivation and electron band energy regulation of a ZnO electron transport layer through synergetic bifunctional surface engineering for efficient quantum dot light-emitting diodes DOI

Fensha Cai,

Yufei Tu,

Dadi Tian

et al.

Nanoscale, Journal Year: 2023, Volume and Issue: 15(25), P. 10677 - 10684

Published: Jan. 1, 2023

Zinc oxide nanoparticles (ZnO NPs) have been actively pursued as the most effective electron transport layer for quantum-dot light-emitting diodes (QLEDs) in light of their unique optical and electronic properties low-temperature processing. However, high mobility smooth energy level alignment at QDs/ZnO/cathode interfaces cause over-injection, which aggravates non-radiative Auger recombination. Meanwhile, abundant defects hydroxyl group (-OH) oxygen vacancies (OV) ZnO NPs act trap states inducing exciton quenching, synergistically reduces radiation recombination degrading device performance. Here, we develop a bifunctional surface engineering strategy to synthesize with low defect density environmental stability by using ethylenediaminetetraacetic acid dipotassium salt (EDTAK) an additive. The additive effectively passivates induces chemical doping simultaneously. Bifunctional alleviates excess injection elevating conduction band promote charge balance. As result, state-of-the-art blue QLEDs EQE 16.31% T50@100 cd m-2 1685 h are achieved, providing novel fabricate efficiency long operating lifetime.

Language: Английский

Citations

12
Novel cathode buffer layer enabling over 21.6%/20.9% efficiency in wide bandgap/inorganic perovskite solar cells DOI

Ming Luo,

Sanlong Wang,

Zhao Zhou Zhu

et al.

Nano Energy, Journal Year: 2023, Volume and Issue: 121, P. 109162 - 109162

Published: Dec. 8, 2023

Language: Английский

Citations

11
Organic‐Hydrochloride‐Modified ZnO Electron Transport Layer for Efficient Defect Passivation and Stress Release in Rigid and Flexible all Inorganic Perovskite Solar Cells DOI Open Access
Wenjie Xu,

Xiaoxuan Tang,

Jie Xiong

et al.

Small, Journal Year: 2024, Volume and Issue: 20(32)

Published: March 22, 2024

Abstract All inorganic CsPbI 2 Br perovskite (AIP) has attracted great attention due to its excellent resistance against thermal stress as well the remarkable capability deliver high‐voltage output. However, solar cells (PeSCs) still encounter critical challenges in attaining both high efficiency and mechanical stability for commercial applications. In this work, formamidine disulfide dihydrochloride (FADD) modified ZnO electron transport layer (ETL) been developed fabricating inverted devices on either rigid or flexible substrate. It is found that FADD modification leads efficient defects passivation, thereby significantly reducing charge recombination at AIP/ETL interface. As a result, PeSCs (r‐PeSCs) an enhanced of 16.05% improved long‐term stability. Moreover, introduced can regulate Young's modulus (or Derjaguin‐Muller‐Toporov (DMT) modilus) ETL dissipate concentration interface, effectively restraining crack generation improving PeSCs. The (f‐PeSCs) exhibit one best performances so far reported with 6000 bending cycles curvature radius 5 mm. This work thus provides effective strategy simultaneously improve photovoltaic performance

Language: Английский

Citations

4
Polysaccharide Modified SnO2 for Highly Efficient Perovskite Solar Cells DOI Creative Commons
Jingjing He, Xiaolei Xu,

Yuanyuan Dai

et al.

Solar RRL, Journal Year: 2024, Volume and Issue: 8(11)

Published: May 17, 2024

Tin oxide (SnO 2 ) has been demonstrated as a promising electron transport material for perovskite solar cells (PSCs) due to its low‐temperature process and high charge extraction ability. However, the key improving internal performance of PSCs toward unity lies in ability enhancing bulk SnO quality reducing energy level mismatch between layer. Herein, facile effective strategy simultaneously functionalize structure by sodium alginate (SA) polysaccharide compound is reported. The investigations reveal that SA leads formation nanosynapse films, which allows aligned levels suppressed recombination, significantly carrier transport. Consequently, CsMAFAPb(I x Br 1− 3 CsPbI achieve remarkable power conversion efficiency 24.11% 16.90%, respectively, based on ‐SA layers (ETLs). This work offers way fabricate high‐performance ETL PSCs.

Language: Английский

Citations

4