Enhancement of the electrochemical performance of a cathodically coloured organic electrochromic material through the formation of hydrogen bonded supramolecular polymer assembly

Halder, Sayan; Behere, Ravi Prakash; Gupta, Neelam; Kuila, Biplab Kumar; Chakraborty, Chanchal

doi:10.1016/j.solmat.2022.111858

Cited by 13 publications

(7 citation statements)

References 60 publications

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“…Contrarily, diffusion of counterions becomes the ratedetermining step when the peak current is proportional to the square root of the scan rate. 31,32 Accordingly, 1−4 followed the diffusion-controlled redox process as the cathodic peak current fits better with the square root of the scan rate (Figure 2c,d; Figures S6c,d, S8c,d).…”

Section: Photophysical Propertiesmentioning

confidence: 72%

“…Generally, the redox process follows two perspectives; i.e., if the scan rate is proportional to the anodic/cathodic peak current, the rate-determining step depicts the electron transfer process. Contrarily, diffusion of counterions becomes the rate-determining step when the peak current is proportional to the square root of the scan rate. , Accordingly, 1 – 4 followed the diffusion-controlled redox process as the cathodic peak current fits better with the square root of the scan rate (Figure c,d; Figures S6c,d, S8c,d).…”

Section: Resultsmentioning

confidence: 91%

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Efficient Standalone Flexible Small Molecule Organic Solar Cell Devices: Structure-Performance Relation Among Tetracyanoquinodimethane Derivatives

Mohitkar,

Goel

et al. 2023

ACS Omega

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Currently, very few dicyano and tetracyanoquinodimethane (TCNQ) based molecules are utilized as active layers, sandwiched between the electron and hole transport layer in organic solar cell (OSC) devices. Nevertheless, simple mono-and disubstituted TCNQ derivatives as exclusively active layers are yet unexplored and provide scope for further investigation. In this study, TCNQ derivatives with varying amine substituents, namely, AEPYDQ (1), BMEDDQ (2), MATBTCNQ (3), and MITATCNQ (4), were explored as efficient standalone, flexible, all small molecule OSC devices. Particularly, 1 resulted in the highest device efficiency of 11.75% with an aromatic amine, while 2 possessing an aliphatic amine showed the lowest power conversion efficiency (PCE; 2.12%). Notably, the short circuit current density (J SC ) of device 1 increased from 2 mA/cm 2 in the dark to 9.12 mA/cm 2 under light, indicating a significant boost in the current generation. Further, 1 manifested more crystallinity than others. Interestingly, 4 exhibited a higher PCE (5.90%) than 3 (PCE is 2.58%), though 3 is disubstituted with an aromatic amine, probably attributed to the electron-withdrawing effects of the −CF 3 and −CN groups in 3 reducing the available π-electron density for stacking. Therefore, this study emphasizes crystallinity, significantly on the PCE, offering insights into the design of many such efficient OSCs.

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Section: Photophysical Propertiesmentioning

confidence: 72%

Section: Resultsmentioning

confidence: 91%

Efficient Standalone Flexible Small Molecule Organic Solar Cell Devices: Structure-Performance Relation Among Tetracyanoquinodimethane Derivatives

Mohitkar,

Goel

et al. 2023

ACS Omega

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“…[11] Other CPs, like P3HT [68,69] and PPy, [70] too have been extensively used both in their pristine forms or their derivatives to fabricate ECDs. [71][72][73][74] The advantage of organic ECMs lies in their ease of processibility, higher conductivity, requirement of lesser voltage, and better flexibility. Other unconventional organic ECMs include carbazoles, dimides, or bismide-based devices with promising end results.…”

Section: Active Chromophores' Categoriesmentioning

confidence: 99%

Recipe for Fabricating Optimized Solid‐State Electrochromic Devices and Its Know‐How: Challenges and Future

Ghosh

Kandpal

Rani

et al. 2023

Advanced Optical Materials

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Electrochromism, a well‐defined phenomenon of bias‐induced reversible color switching, has led to real applications in several smart devices including smart windows and self‐powered batteries and solar panels. For these applications, the electrochromic (EC) materials need to be integrated as solid‐state devices. Deciphering ways to recreate a conventional device requires understanding of basic structure and its working. A thorough discussion is provided here regarding various materials that can act as chromophores when treated with some electric bias in addition to a few parameters that dictatehow fairly the device performs. The next important aspect is the device design, the skeleton of which usually includes conducting substrates, EC active materials, and an electrolyte. Step‐by‐step, various available device paradigms are discussed starting from a single EC electrode then joining a blank substrate to fabricate a monolayer electrochromic device (ECD) moving onto bi‐layer ECDs, and finally, all‐in‐one EC gel, which is devoid of any proper layered pattern. A thorough discussion regarding various application‐oriented structural modifications is provided. Challenges and the areas that need to be addressed in immediate future are discussed.

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“…[4][5][6][7] EC technology has garnered significant attention due to its potential applications in a wide range of fields, such as smart windows, electronic skin, transparent displays, and anti-glare glasses. [8][9][10][11][12][13] Additionally, ECDs possess substantial commercial potential due to their low cost, portability, and reversibility, which have piqued the interest of many researchers. [14][15][16][17] Taking advantage of the reversible color change induced by redox reactions, mainly Faraday redox reactions, in the presence of an applied electric field, most of the ECDs can switch between the highly transmissive state and the colored state, and some ECDs can switch between different colors.…”

Section: Introductionmentioning

confidence: 99%

Recent Advance in Electrochromic Materials and Devices for Display Applications

Wang,

Zhu,

Zhuang

et al. 2024

ChemPlusChem

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Electrochromic devices (ECDs) possess the performance advantages in terms of color adjustability, low power consumption, and visual friendliness, emerging as one of the ideal candidates for energy‐efficient smart windows, next‐generation displays, and wearable electronics. The optical and electrical characteristics of ECDs could be adjusted by modifying the materials or structure of devices. This review summarizes the recent developments of innovative technologies and key materials of ECDs for display applications, highlighting the key issues and the development trends in this area.

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Enhancement of the electrochemical performance of a cathodically coloured organic electrochromic material through the formation of hydrogen bonded supramolecular polymer assembly

Cited by 13 publications

References 60 publications

Efficient Standalone Flexible Small Molecule Organic Solar Cell Devices: Structure-Performance Relation Among Tetracyanoquinodimethane Derivatives

Efficient Standalone Flexible Small Molecule Organic Solar Cell Devices: Structure-Performance Relation Among Tetracyanoquinodimethane Derivatives

Recipe for Fabricating Optimized Solid‐State Electrochromic Devices and Its Know‐How: Challenges and Future

Recent Advance in Electrochromic Materials and Devices for Display Applications

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