A5019997816- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Thin-Film Transistor Technologies
- Nanowire Synthesis and Applications
- Advanced Memory and Neural Computing
- Advanced Sensor and Energy Harvesting Materials
- Neural dynamics and brain function
- Neural Networks and Reservoir Computing
- Analytical Chemistry and Sensors
- Organic Light-Emitting Diodes Research
Xi'an Jiaotong University
2021-2023
The variation of the vertical component distribution can significantly influence photovoltaic performance organic solar cells (OSCs), mainly due to its impact on exciton dissociation and charge-carrier transport recombination. Herein, binary devices are fabricated via sequential deposition (SD) D18 L8-BO materials in a two-step process. Upon independently regulating spin-coating speeds each layer deposition, optimal SD device shows record power conversion efficiency (PCE) 19.05% for...
The development of organic solar cells (OSCs) with thick active layers is crucial importance for the roll-to-roll printing large-area panels. Unfortunately, increasing layer thickness usually results in a significant reduction efficiency. Herein, we fabricated efficient thick-film OSCs an consisting one polymer donor and two non-fullerene acceptors. acceptors were found to possess enlarged exciton diffusion length mixed phase, which beneficial generation dissociation. Additionally, by...
Organic solar cells (OSCs) are promising candidates for next-generation photovoltaic technologies, with their power conversion efficiencies (PCEs) reaching 19%. However, the typically used spin-coating method, toxic halogenated processing solvents, and conventional bulk-heterojunction (BHJ), which causes excessive charge recombination, hamper commercialization further efficiency promotion of OSCs. Here, a simple but effective dual-slot-die sequential (DSDS) strategy is proposed to address...
Although organic solar cells (OSCs) have delivered an impressive power conversion efficiency (PCE) of over 19 %, most them demonstrated rather limited stability. So far, there are hardly any effective and universal strategies to improve stability state-of-the-art OSCs. Herein, we developed a hybrid electron-transport layer (ETL) in inverted OSCs using ZnO new modifying agent (NMA), significantly improved the PCEs for all tested devices. In particular, when applied D18 : N3 system, its OSC...
Surface spinodal demixing of DIO:ITIC leads to poor electron mobility, while the CN:Y6 blend undergoes a binodal process which is similar that occurs in bulk liquid layer, contributing uniform vertical crystallinity distribution.
Indoor organic photovoltaics (OPVs) have shown great potential application in driving low-energy-consumption electronics for the Internet of Things. There is still room further improving power conversion efficiency (PCE) indoor OPVs, considering that desired morphology active layer to reduce trap-assisted recombination and voltage losses thus simultaneously enhance fill factor (FF) open-circuit efficient OPVs remains obscure. Herein, by optimizing bulk interface via a layer-by-layer (LBL)...
Molecule engineering has been demonstrated as a valid strategy to adjust the active layer morphology in all-small-molecule organic solar cells (ASM-OSCs). In this work, two non-fullerene acceptors (NFAs), FO-2Cl and FO-EH-2Cl, with different alkyl side chains are reported applied ASC-OSCs. Compared FO-2Cl, FO-EH-2Cl is designed by replacing octyl branched iso-octyl chains, leading an enhanced molecular packing, crystallinity, redshifted absorption. With small molecule BSFTR donor, device of...
Abstract Organic solar cells (OSCs) have attracted extensive attention from both academia and industry in recent years due to their remarkable improvement power conversion efficiency (PCE). However, the Golden Triangle (the balance of efficiency‐stability‐cost) required for large‐scale industrialization OSCs still remains a great challenge. Here, new nonfused‐ring electron acceptor (NFREA) BF its polymerized counterpart PBF were designed synthesized, photovoltaic performance, storage...
Photonics neuromorphic computing shows great prospects due to the advantages of low latency, power consumption and high bandwidth. Transistors with asymmetric electrode structures are receiving increasing attention their consumption, optical response, simple preparation technology. However, intelligent synapses constructed by electrodes still lacking systematic research mechanism analysis. Herein, we present an structure light-stimulated synaptic transistor (As-LSST) a bulk heterojunction as...
Abstract Although organic solar cells (OSCs) have delivered an impressive power conversion efficiency (PCE) of over 19 %, most them demonstrated rather limited stability. So far, there are hardly any effective and universal strategies to improve stability state‐of‐the‐art OSCs. Herein, we developed a hybrid electron‐transport layer (ETL) in inverted OSCs using ZnO new modifying agent (NMA), significantly improved the PCEs for all tested devices. In particular, when applied D18 : N3 system,...
Dual nonfullerene acceptors Y6:FINIC with 3D charge transport features are used to fabricate sequential-process heterojunction (SHJ) and bulk (BHJ) organic solar cells, the SHJ outperforms BHJ.
Semitransparent organic solar cells based on sequentially processed heterojunction (SHJ) structure show a power conversion efficiency (PCE) of 12.5% and an average visible transmittance (AVT) 25.4%, outperforming the BHJ counterpart (PCE = 11.8%, AVT 22.9%).
Organic thin films usually feature vertical phase segregation, and film-depth-dependent light absorption spectroscopy is an emerging characterization method to study the separation of active layer in organic electronics field. However, interference effects on can lead optical errors their results. In this work, fluctuations peak intensity position are investigated. Subsequently, a numerical based inverse transfer matrix proposed obtain constants through spectroscopy. The extinction...
In this work, we apply the sequential processing (SqP) method to address relatively low electron mobility in recent all-polymer solar cells (all-PSCs) based on polymerized small-molecule acceptor (PSMA). Compared blend-casting (BC) method, all-PSCs composed of PM6/PY-IT via SqP show boosted and a more balanced charge carrier transport, which increases FF device compensates for short-circuit current loss, rendering comparable overall performance with BC device. Through film-depth-dependent...