Polymers
·
2022
·Vol. 14
·期 10
·2058
·
IF 4.967
Chaoyue Zhao,Hui Huang,Lihong Wang,Guoping Zhang,Guanyu Lu,Han Yu,Guanghao Lu,Yulai Han,Mingxia Qiu,Shunpu Li,Guangye Zhang
In this work, we apply the sequential processing (SqP) method to address the relatively low electron mobility in recent all-polymer solar cells (all-PSCs) based on the polymerized small-molecule acceptor (PSMA). Compared to the blend-casting (BC) method, all-PSCs composed of PM6/PY-IT via the SqP method show boosted electron mobility and a more balanced charge carrier transport, which increases the FF of the SqP device and compensates for the short-circuit current loss, rendering comparable overall performance with the BC device. Through film-depth-dependent light absorption spectroscopy, we analyze the sub-layer absorption and exciton generation rate in the vertical direction of the device, and discuss the effect of the increased electron mobility on device performance, accordingly.Keywords:all-polymer solar cells;sequential processing;polymerized small-molecule acceptors
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
PubMed
高影响因子
Polymers
·
2022
·Vol. 14
·期 18
·3835
·
IF 4.967
Guoping Zhang,Lihong Wang,Chaoyue Zhao,Yajie Wang,Ruiyu Hu,Jiaxu Che,Siying He,Wei Chen,Leifeng Cao,Zhenghui Luo,Mingxia Qiu,Shunpu Li,Guangye Zhang
All-polymer solar cells (all-PSCs) are organic solar cells in which both the electron donor and the acceptor are polymers and are considered more promising in large-scale production. Thanks to the polymerizing small molecule acceptor strategy, the power conversion efficiency of all-PSCs has ushered in a leap in recent years. However, due to the electrical properties of polymerized small-molecule acceptors (PSMAs), the FF of the devices is generally not high. The typical electron transport material widely used in these devices is PNDIT-F3N, and it is a common strategy to improve the device fill factor (FF) through interface engineering. This work improves the efficiency of all-polymer solar cells through interfacial layer engineering. Using PDINN as the electron transport layer, we boost the FF of the devices from 69.21% to 72.05% and the power conversion efficiency (PCE) from 15.47% to 16.41%. This is the highest efficiency for a PY-IT-based binary all-polymer solar cell. This improvement is demonstrated in different all-polymer material systems.Keywords:organic photovoltaics;all-polymer solar cells;power conversion efficiency;electron transport layer
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
PubMed
高影响因子
Polymers
·
2023
·Vol. 15
·期 16
·3462
·
IF 5
Yajie Wang,Chaoyue Zhao,Ziqi Cai,Lihong Wang,Liangxiang Zhu,Hui Huang,Guoping Zhang,Peng You,Chen Xie,Yaping Wang,Qing Bai,Tao Yang,Shunpu Li,Guangye Zhang
Organic solar cells (OSCs) have gained increasing attention. Among the various directions in OSCs, all-polymer solar cells (all-PSCs) have emerged as a highly promising and currently active research area due to their excellent film formation properties, mechanical properties, and thermal stabilities. However, most of the high-efficiency all-PSCs are processed from chloroform with an active layer thickness of ~100 nm. In order to meet the requirements for industrialization, a thicker active layer processed from low-vapor pressure solvents (preferentially a hydrocarbon solvent) is strongly desired. Herein, we employ toluene (a hydrocarbon solvent with a much higher boiling point than chloroform) and a method known as sequential processing (SqP) to mitigate the rapid decline in efficiency with increasing film thickness. We show that SqP enables a more favorable vertical phase segregation that leads to less trap-assisted recombination and enhanced charge extraction and lifetime than blend-cast devices at higher film thicknesses.Keywords:all-polymer solar cells;sequential processing;hydrocarbon solvent processing;thick-film active layer
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Lei Lv,Xiaofen Wang,Xinlong Wang,Lei Yang,Tao Dong,Zhou Yang,Hui Huang
Novel tellurophene-based n-type copolymers are synthesized and characterized with thermal analysis, electrochemistry, optical spectroscopy, and DFT calculations. The copolymers demonstrate reversible interactions with bromine. Through tuning of the building blocks and alkyl chains together with device engineering, the maximum power conversion efficiency of all-polymer solar cells improves from 2.8 to 4.3%, which is supported by photoluminescence, atomic force microscopy, transmission electron microscopy, the space charge limit current method, and exciton dynamic studies. These results suggest that tellurophene-based n-type copolymers are promising electron acceptors for organic solar cells and potential sensor materials for bromine detection.
研究领域:
材料科学
·
有机光电
✓ 已验证
DOI
PubMed
高影响因子
Nano Energy
·
2022
·
IF 19.069
Chaoyue Zhao,Jicheng Yi,Lihong Wang,Guanyu Lu,Hui Huang,Ha Kyung Kim,Han Yu,Chen Xie,Peng You,Guanghao Lu,Mingxia Qiu,He Yan,Shunpu Li,Guangye Zhang
Polymer acceptors based on the polymerization of small-molecule acceptor (PSMAs) have developed rapidly in recent years. All-polymer solar cells (all-PSCs) composed of PSMAs and polymer donors not only retain the excellent mechanical properties, but also have better morphological properties than traditional polymer acceptors such as N2200. However, since PSMAs are generally not highly polymerized, their electron mobilities are generally lower than the hole mobilities of the high-molecular-weight polymer donors they are used with. In this work, we apply the sequential processing (SqP) method and use toluene as the processing solvent to prepare PSMA-based all-PSCs, which effectively improves the electron mobility and shows much higher efficiency (15.8 %) than the SqP device prepared from chloroform (13.9 %) – the conventional solvent used for high-performance PSMAs. Not only that, the efficiency of the toluene-processed SqP device is also higher than that of the device prepared by the traditional blending-casting (BC) method (14.2 %). In addition, for the first time, we reveal the film formation process of all-polymer active layers prepared by the SqP method using the in situ UV-Vis absorption technique, and investigate the vertical phase separation and the rate of exciton generation across the device using film-depth-dependent absorption spectroscopy , which systematically explained the effect of increased mobility on device parameters. This methodology is applied in two different all-polymer systems, namely, PM6:PYF-T- o and PM6:PY-IT, and both systems manifest the same conclusion.
研究领域:
材料科学
·
能源研究
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Rong Hu,Zijie Xiao,Yurong Liu,Yongyao Su,Chaozhong Guo,Zhe Chen,Cuihong Liu,Wei Zhang
To enhance the power conversion efficiency (PCE) and stability of all-polymer solar cells (all-PSCs), a new precursor solution based on an in situ chemical reaction of nanomolybdenum powder (Mo), hydrogen peroxide (H2O2), and ammonia (NH3·H2O) was developed for preparing a MoO3 hole transport layer (HTL) for all-PSCs. The results showed that the PCE and stability of PM6:PY-IT solar cells based on the MoO3 HTL were better than those based on a PEDOT:PSS layer. To further understand the relationship between the HTL and the device performance, ultrafast photophysical processes of all-PSCs based on different HTLs were contrastively analyzed. Our research indicated that the micromorphology of active layers could be influenced by the interfacial layer material, consequently determining the photoelectric conversion process of all-PSCs. The MoO3-based all-PSCs had longer charge lifetime, higher charge mobility, and lower charge recombination characteristics compared with the devices based on the PEDOT:PSS layer during the operation time. As a result, the MoO3-based PM6:PY-IT solar cells achieved an initial PCE of 15.2%, and they still maintained more than 80% of their initial efficiency after 1000 h.
研究领域:
材料科学
·
光物理学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Matter
·
2023
·
IF 18.9
Jiali Song,Chao Li,Jiawei Qiao,Chunhui Liu,Yunhao Cai,Yun Li,Jiaxin Gao,Min Hun Jee,Xiaotao Hao,Han Young Woo,Zheng Tang,He Yan,Yanming Sun
Limited by the relatively low short-circuit current density ( J sc ) and fill factor (FF), the efficiency of all-polymer solar cells (all-PSCs) is still inferior to the small molecular acceptor (SMA) counterpart-based devices. Herein, we fabricate efficient ternary all-PSCs by introducing a fluorinated small molecular acceptor-derived polymer acceptor named PYF-T- o to broaden the absorption of the all-polymer blend and improve the molecular crystallinity. PYF-T- o was found to have a good compatibility with the host PY-DT acceptor, thus contributing to form a homogeneous mixed phase in the active layer. Consequently, the ternary all-PSC exhibits simultaneously improved J sc and FF than those of the binary all-PSC, resulting in an impressive efficiency of 18.15% (certified as 17.73%). Moreover, the large-area (1 cm 2 ) and eco-friendly ternary all-PSCs (processed with o -xylene) were fabricated, and high efficiencies of 16.43% and 17.67% were obtained, respectively, showing the great potential of all-PSCs for future organic photovoltaic applications.
研究领域:
材料科学
·
高分子物理
·
光伏技术
·
纳米结构调控
·
能源材料
✓ 已验证
产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
·
2025
·
IF 2.5
Tiantian Wang,Jianhong Wei,Furong Shi,Hejie Wang,Jinye He,Xudong Lv,Yuan Zhou,Pengzhi Guo,Chenglong Wang,Yangjun Xia
In recent years, polymerized small molecule acceptors (PSMAs) have emerged as a promising strategy that combines the strong absorption of small molecules with the film-forming ability and stability of polymers, thereby greatly boosting the performance of all-polymer solar cells (all-PSCs). We designed a non-fused acceptor, DTBT-IC, and its polymeric counterpart, PDTBT-Br-T, by selecting DTBT as the core, bithiophene as the π-bridge, and IC as the terminal group. PDTBT-Br-T was synthesized via Stille coupling and used with PM6 as the donor to fabricate organic solar cells. The PDTBT-Br-T-based device delivered superior performance, with a VOC of 1.050 V, JSC of 9.32 mA cm−2, FF of 45.33%, and a PCE of 4.44%, outperforming the DTBT-IC-based counterpart. Morphological and structural analyses revealed that PDTBT-Br-T exhibits more ordered backbone stacking and defined phase separation, enhancing exciton dissociation and charge transport, and suppressing energy loss. The study highlights that polymerization of DTBT-IC enhances intermolecular packing and microstructure, offering critical design insights for efficient all-PSCs.
研究领域:
材料科学
·
高分子化学
·
有机电子学
·
光伏技术
✓ 已验证
DOI
高影响因子
Solar RRL
·
2024
·Vol. 8
·期 6
·2301010
·
IF 6
Luobin She,Chuankai Zou,Kaihang Yang,Xiaomin Kang,Lin Chen,Jing Tang,Zhenye Li
All-polymer solar cells (all-PSCs) demonstrate splendid advantages of thermal and mechanical stability. Nevertheless, the rock-ribbed trade-off between the crystallinity and phase separation scale of donor/acceptor (D/A) hinder the power conversion efficiency (PCE) improvement of all-PSCs. Here, a novel two-dimensional transition-metal phosphorus trichalcogenides (TMPTCs) namely Cd 0.85 PS 3 Li 0.3 is intelligently designed and synthesized, and firstly employed as a nanoparticle dopant for PBDB-T:N2200-based all-PSCs. The two-dimensional Cd 0.85 PS 3 Li 0.3 possess enormous surface area that can serve as the nucleation center, inducing the crystallinity of D/A without influencing the original phase separation. Such feature significantly boosted the charge transport, PCE (from 7.18% to 8.79%) and stability of PBDB-T:N2200-based device. Moreover, the Cd 0.85 PS 3 Li 0.3 nanoparticle dopant was proved to be universal in non-fullerene small molecule acceptor (NFSMA)-based organic solar cells (OSCs), for which the PCE was boosted from 15.05% to 17.27% for PM6:L8-BO-based OSCs and from 17.29% to 19.10% for D18:L8-BO-based OSCs. These observations exemplify the significance of two-dimensional TMPTCs nanoparticle dopant as a tool for breaking the rock-ribbed trade-off between the crystallinity and phase separation scale of D/A in OSCs, which may open up a special field for making two-dimensional TMPTCs work in a unprecedented way in OSCs.
研究领域:
材料科学
·
纳米技术
·
太阳能
·
聚合物化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）