Defect Regulation of Low‐Temperature‐Processed CsPbI2Br Solar Cells Based on Silane Additives DOI Open Access

Zhan Su,

Bo Yu,

Yuning Zhang

и другие.

Solar RRL, Год журнала: 2024, Номер unknown

Опубликована: Дек. 24, 2024

The development of inverted all‐inorganic perovskite solar cells (PSCs) is limited by the defect‐induced nonradiative recombination. Herein, a strategy to enhance efficiency and stability p‐i‐n type CsPbI 2 Br introducing (3‐glycidyloxypropyl)trimethoxysilane (GOPTS) into precursor solution reported. incorporation GOPTS significantly reduces voids grain boundaries in films fabricated at low temperatures (150 °C). alkoxy, epoxy, ether groups effectively passivate uncoordinated Pb, diminishing recombination centers associated with defects. Density functional theory simulations suggest that increases vacancy formation energies Cs I, leading reduced Furthermore, mitigates photoinduced phase segregation further enhances performance PSCs. This modification results an increase power conversion cells, from 11.83% 13.32%, when self‐assembled monolayers are used as hole transport layer. study underscores potential silane‐based additives defect passivation for perovskites, providing viable route advancement high‐efficiency cells.

Язык: Английский

Small signal analysis for the characterization of organic electrochemical transistors DOI Creative Commons
Young-Seok Kim, Joost Kimpel, Alexander Giovannitti

и другие.

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Сен. 1, 2024

Abstract A method for the characterization of organic electrochemical transistors (OECTs) based on small signal analysis is presented that allows to determine electronic mobility as a function continuous gate potential using standard two-channel AC potentiostat. Vector in frequency domain exclude parasitic components both ionic and conduction regardless film thickness, thus resulting deviation low 4%. Besides mobility, OECTs also provides information about wide range other parameters including conductance, transconductance, conductivity volumetric capacitance through single measurement. General applicability demonstrated by characterizing devices n-type, p-type, ambipolar materials operating accumulation or depletion modes. Accurate benchmarking mixed ionic-electronic conductors can be anticipated guide development design bioelectronic devices.

Язык: Английский

Процитировано

2

Unveiling the Spectroscopic Signatures of Poly(3,4-ethylenedioxythiophene) by Controlling Polaron and Bipolaron Concentrations DOI Creative Commons
Rodrigo Rubio,

Amanda Opis-Basilio,

A. Torres

и другие.

The Journal of Physical Chemistry C, Год журнала: 2024, Номер 128(43), С. 18612 - 18621

Опубликована: Окт. 18, 2024

The electronic and optical properties of conductive polymers (CPs) are related to the formation polarons bipolarons localized along polymer backbone. Their concentration is affected by conformational morphological features CPs, making it crucial understand how they chain conformation π-electron delocalization. In this work, we studied modulation in PEDOT:PSS after post-treatment with hydrazine H2SO4, which influence properties. Through a combination electron spin resonance spectroscopy, UV–vis–NIR Raman conductivity measurements, evaluate changes PEDOT, delocalization within We present experimental evidence supporting recently revised interpretation spectrum PEDOT:PSS, through theoretical analysis, propose new PEDOT:PSS. Furthermore, provide first presence polaron pairs triplet state have S = 1, were only predicted theoretically up point.

Язык: Английский

Процитировано

2

One Pot Photomediated Formation of Electrically Conductive Hydrogels DOI Creative Commons
Dan My Nguyen,

Chun‐Yuan Lo,

Tianzheng Guo

и другие.

ACS Polymers Au, Год журнала: 2023, Номер 4(1), С. 34 - 44

Опубликована: Дек. 8, 2023

Electrically conductive hydrogels represent an innovative platform for the development of bioelectronic devices. While photolithography technologies have enabled fabrication complex architectures with high resolution, photoprinting is still a challenging task because polymer absorbs light which can outcompete photopolymerization insulating scaffold. In this study, we introduce approach to synthesizing in one step. Our combines simultaneous photo-cross-linking polymeric scaffold and polymerization 3,4-ethylene dioxythiophene (EDOT), without additional photocatalysts. This process involves copolymerization photo-cross-linkable coumarin-containing monomers sodium styrenesulfonate produce water-soluble poly(styrenesulfonate-co-coumarin acrylate) (P(SS-co-CoumAc)) copolymer. findings reveal that optimizing [SS]:[CoumAc] ratio at 100:5 results strain break up 16%. mechanical resilience coupled electronic conductivity 9.2 S m–1 suitable wearable electronics. Furthermore, be photopatterned achieve micrometer-sized structures resolution. The photo-cross-linked are used as electrodes record stable reliable surface electromyography (sEMG) signals. These novel polymers combined one-pot PEDOT (poly-EDOT) open possibilities rapidly prototyping devices creating custom-designed interfaces between electronics biological systems.

Язык: Английский

Процитировано

5

Integrated Temperature–Humidity Sensors for a Pouch-Type Battery Using 100% Printing Process DOI Creative Commons

Gyeongseok Oh,

Jae-Ho Sim,

Mijin Won

и другие.

Sensors, Год журнала: 2023, Номер 24(1), С. 104 - 104

Опубликована: Дек. 25, 2023

The performance, stability, and lifespan of lithium-ion batteries are influenced by variations in the flow lithium ions with temperature. In electric vehicles, coolants generally used to maintain optimal temperature battery, leading an increasing demand for humidity sensors that can prevent leakage short circuits. this study, were fabricated on a pouch film pouch-type battery. IDE electrodes screen-printed humidity- temperature-sensing materials printed using dispenser process. Changes capacitance Ag-CNF sensing, while changes resistance PEDOT:PSS sensing. two integrated into single electrode performance evaluation. sensor exhibited response ΔR ≈ 0.14 from 20 °C 100 20% RH as reference, ΔC 2.8 relative 80% at °C. is expected contribute efficient monitoring applications various batteries.

Язык: Английский

Процитировано

3

Reducing delamination of an electron-transporting polymer from a metal oxide for electrochemical applications DOI
Aiswarya Abhisek Mohapatra, Waleed Kuar Yual,

Yadong Zhang

и другие.

Chemical Communications, Год журнала: 2023, Номер 60(8), С. 988 - 991

Опубликована: Дек. 20, 2023

Delamination of the electron-transporting polymer N2200 from indium tin oxide (ITO) in aqueous electrolytes is mitigated by modifying ITO with an azide-functionalized phosphonic acid (PA) which, upon UV irradiation, reacts polymer. The optical, electrochemical, and spectroelectrochemical properties thin films are retained non-aqueous media.

Язык: Английский

Процитировано

1

Imidazolium-Based Sulfonating Agent to Control the Degree of Sulfonation of Aromatic Polymers and Enable Plastics-to-Electronics Upgrading DOI Creative Commons

Chun‐Yuan Lo,

Kelsey P. Koutsoukos,

Dan My Nguyen

и другие.

JACS Au, Год журнала: 2024, Номер 4(7), С. 2596 - 2605

Опубликована: Июль 3, 2024

The accumulation of plastic waste in the environment is a growing environmental, economic, and societal challenge. Plastic upgrading, conversion low-value polymers to high-value materials, could address this Among upgrading strategies, sulfonation aromatic powerful approach access materials for range applications, such as ion-exchange resins membranes, electronic pharmaceuticals. While many methods have been reported, achieving high degrees while minimizing side reactions that lead defects polymer chains remains challenging. Additionally, sulfonating agents are most often used large excess, which prevents precise control over degree their functionality. Herein, we these challenges using 1,3-disulfonic acid imidazolium chloride ([Dsim]Cl), sulfonic acid-based ionic liquid, sulfonate upgrade materials. We show stoichiometric [Dsim]Cl can effectively model polystyrene up 92% yields, with minimal regioselectivity

Язык: Английский

Процитировано

0

Multistep Fabrication of OECTs via Direct Ink Writing, With Performance Analysis Based on a Novel Measurement Protocol DOI Creative Commons
Amir Mohammad Ghafari, Oskar Backman, Emil Rosqvist

и другие.

Advanced Electronic Materials, Год журнала: 2024, Номер unknown

Опубликована: Дек. 4, 2024

Abstract Organic electrochemical transistors (OECTs) have been proven beneficial for bioelectronic applications. However, the demand reliable and fast fabrication methods has not yet fully met. In this work, OECTs are fabricated using direct ink writing (DIW). This method is cleanroom‐free can be done without lithography techniques. These devices characterized benchmarked against spin‐coating drop‐casting deposition approaches. Response time as well product of carrier charge mobility volumetric capacitance found to higher DIW approach compared standard addition, a testing process designed systematically evaluate operational degradation semiconductor channel. test enables identical conditions all tested while providing comparable output. Thicker channels show better stability, thinner proved transistors. Finally, issues instability these discussed.

Язык: Английский

Процитировано

0

Defect Regulation of Low‐Temperature‐Processed CsPbI2Br Solar Cells Based on Silane Additives DOI Open Access

Zhan Su,

Bo Yu,

Yuning Zhang

и другие.

Solar RRL, Год журнала: 2024, Номер unknown

Опубликована: Дек. 24, 2024

The development of inverted all‐inorganic perovskite solar cells (PSCs) is limited by the defect‐induced nonradiative recombination. Herein, a strategy to enhance efficiency and stability p‐i‐n type CsPbI 2 Br introducing (3‐glycidyloxypropyl)trimethoxysilane (GOPTS) into precursor solution reported. incorporation GOPTS significantly reduces voids grain boundaries in films fabricated at low temperatures (150 °C). alkoxy, epoxy, ether groups effectively passivate uncoordinated Pb, diminishing recombination centers associated with defects. Density functional theory simulations suggest that increases vacancy formation energies Cs I, leading reduced Furthermore, mitigates photoinduced phase segregation further enhances performance PSCs. This modification results an increase power conversion cells, from 11.83% 13.32%, when self‐assembled monolayers are used as hole transport layer. study underscores potential silane‐based additives defect passivation for perovskites, providing viable route advancement high‐efficiency cells.

Язык: Английский

Процитировано

0