Highly Stable Graphene‐Based Flexible Hybrid Transparent Conductive Electrodes for Organic Solar Cells

Abstract

Flexible transparent conductive electrodes (TCEs) are an essential part of flexible electronic and energy devices. As a promising alternative to ITO (In2O3:Sn), silver nanowire has poor environmental stability and adhesion, which limits its development. Herein, transition metal carbides and carbonitrides called MXene are inserted between silver nanowires and graphene grown by chemical vapor deposition to improve the conductivity, adhesion, roughness, and stability of the electrode. Nanosheets fill the voids of the network and connect the nanowires with graphene to provide more conductive channels. In addition, due to the solvent evaporation effect and thermal effect in the preparation process, the nanowire junctions are welded together. Based on the unique structure, the proposed composite TCE shows low sheet resistance (18.1 Ω sq−1) and high optical transmittance (88.1% at 550 nm). Furthermore, compared to the reference samples, the composite TCEs demonstrate stable electrical performances under different environmental conditions, including thermal environment, exposures to air for 80 days, and bending for 2000 cycles. Finally, flexible organic solar cells (OSCs) are prepared using the composite TCEs, which show comparable efficiency to that of ITO‐based OSCs. Therefore, the flexible transparent electrodes are expected to be applied in solar cells, organic light‐emitting diodes, and a broader range.

Remarkable Noise Reduction in High-Stability Self-Powered Doped Graphene/Si-Quantum Dot Broadband Photodetectors by Using Graphene Quantum Dots as an Interlayer

“…6 , 4.50−8.35 × 10 12 cm Hz 1/2 W −1 , ∼94 dB, and 1.08/ 0.94 μs, respectively). PC and DC were nearly consistent for 1000 h in air, suggesting excellent stability.The Supporting Information is available free of charge at https://pubs.acs.org/doi/10.1021/acssuschemeng.2c01819.…”

“…Photodetectors (PDs) are extensively employed as crucial components in a variety of fields such as information technology, telecommunication, internet of things, scanning, medical diagnosis/treatments, and military sensing. − Large conductivity and good transparency of the electrodes for a PD are essential for its high performance especially in the visible light region. Among the multiple electrodes, graphene (GR) transparent conductive electrodes (TCEs) have already been employed in the area of optical detecting due to their excellent electrical/optical properties. , The fabrication of Schottky-junction PDs by a simple method of transferring GR to most-popular Si semiconductors is well known, − thereby showing better functionalities compared to their metal electrode-based counterparts. Nevertheless, the photoresponse is limited in its further enhancement owing to the large leakage current caused by relatively high-density defect states at the GR/Si interface .…”

“…Among the multiple electrodes, graphene (GR) transparent conductive electrodes (TCEs) have already been employed in the area of optical detecting due to their excellent electrical/optical properties. 6,7 The fabrication of Schottkyjunction PDs by a simple method of transferring GR to mostpopular Si semiconductors is well known, 8−15 thereby showing better functionalities compared to their metal electrode-based counterparts. Nevertheless, the photoresponse is limited in its further enhancement owing to the large leakage current caused by relatively high-density defect states at the GR/Si interface.…”

One-step fabrication of highly stable, durable, adhesion enhanced, flexible, transparent conducting films based on silver nanowires and neutralized PEDOT:PSS

“…Transparent conducting electrodes (TCEs) are extensively used in optoelectronic devices such as displays, touch panels, solar cells, heaters, supercapacitors, organic light-emitting diodes, etc., [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

“…Transparent conducting electrodes (TCEs) are extensively used in optoelectronic devices such as displays, touch panels, solar cells, heaters, supercapacitors, organic light-emitting diodes, etc. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Flexible transparent electrode materials are specifically favourable for next-generation electronic applications due to being thin, lightweight, foldable, and bendable. [11][12][13][14][15][16][17][18][19][20] In the recent past, flexible and foldable TCEs have fascinated much attention due to the increasing demand for flexible and wearable electronics.…”