ACS Nano
·
2013
·
IF 12.062
Shuxuan Qu,Minghua Li,Lixin Xie,Xiao Huang,Jinguo Yang,Nan Wang,Shangfeng Yang
A new graphene–fullerene composite (rGO-pyrene-PCBM), in which [6,6]-phenyl-C61-butyric acid methyl ester (PCBM) was attached onto reduced graphene oxide (rGO) via the noncovalent functionalization approach, was reported. The pyrene-PCBM moiety was synthesized via a facile esterification reaction, and pyrene was used as an anchoring bridge to link rGO and PCBM components. FTIR, UV–vis, and XPS spectroscopic characterizations were carried out to confirm the hybrid structure of rGO-pyrene-PCBM, and the composite formation is found to improve greatly the dispersity of rGO in DMF. The geometric configuration of rGO-pyrene-PCBM was studied by Raman, SEM, and AFM analyses, suggesting that the C60 moiety is far from the graphene sheet and is bridged with the graphene sheet via the pyrene anchor. Finally rGO-pyrene-PCBM was successfully applied as electron extraction layer for P3HT:PCBM bulk heterojunction polymer solar cell (BHJ-PSC) devices, affording a PCE of 3.89%, which is enhanced by ca. 15% compared to that of the reference device without electron extraction layer (3.39%). Contrarily, the comparative devices incorporating the rGO or pyrene-PCBM component as electron extraction layer showed dramatically decreased PCE, indicating the importance of composite formation between rGO and pyrene-PCBM components for its electron extraction property.
研究领域:
材料科学
·
能源科学
✓ 已验证
DOI
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-10
·
IF 14.7
Gong Cheng,Li Haiyun,Wang Huaxin,Zhang Cong,Zhuang Qixin,Wang Awen,Xu Zhiyuan,Cai Wensi,Li Ru,Li Xiong,Zang Zhigang
The bidirectional migration of halides and silver causes irreversible chemical corrosion to the electrodes and perovskite layer, affecting long-term operation stability of perovskite solar cells. Here we propose a silver coordination-induced n-doping of [6,6]-phenyl-C 61 -butyric acid methyl ester strategy to safeguard Ag electrode against corrosion and impede the migration of iodine within the PSCs. Meanwhile, the coordination between DCBP and silver induces n-doping in the PCBM layer, accelerating electron extraction from the perovskite layer. The resultant PSCs demonstrate an efficiency of 26.03% (certified 25.51%) with a minimal non-radiative voltage loss of 126 mV. The PCE of resulting devices retain 95% of their initial value after 2500 h of continuous maximum power point tracking under one-sun irradiation, and > 90% of their initial value even after 1500 h of accelerated aging at 85 °C and 85% relative humidity.
研究领域:
材料科学
·
光伏技术
·
太阳能
·
化学
·
纳米技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nature Communications
·
2024
·Vol. 15
·期 1
·1-9
·
IF 14.7
Gong Cheng,Li Haiyun,Xu Zhiyuan,Li Yuheng,Wang Huaxin,Zhuang Qixin,Wang Awen,Li Zhijun,Guo Zhihao,Zhang Cong,Wang Baiqian,Li Xiong,Zang Zhigang
Fullerene derivatives are extensively employed in inverted perovskite solar cells due to their excellent electron extraction capabilities. However, [6,6]-phenyl-C 61 -butyric acid methyl ester (PCBM) agglomerates easily in solution and exhibits a relatively low ionization barrier, increasing charge recombination losses and charge accumulation in the interface. Here, tetramethylthiuram disulfide (TMDS) is introduced into the PCBM solution to induce the formation of reducing sulfur radicals through UV light irradiation, allowing for n doping of the PCBM material. The resulting modified PCBM layer exhibits enhanced conductivity and electron mobility, significantly suppressing charge recombination. As a result, the resulting devices incorporating TMDS achieve a champion efficiency of 26.10% (certified 25.39%) and 24.06% at a larger area (1.0 cm 2 ) with negligible hysteresis. More importantly, the optimized devices retain 95% and 90% of their initial efficiency after 1090 h under damp heat testing (85 °C and 85% relative humidity) and after 1271 h under maximum power point-tracking conditions, respectively.
研究领域:
材料科学
·
太阳能
·
光伏技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Journal of Energy Chemistry
·
2022
·
IF 13.599
Licheng Lou,Yuancai Gong,Jiazheng Zhou,Jinlin Wang,Xiao Xu,Kang Yin,Biwen Duan,Huijue Wu,Jiangjian Shi,Yanhong Luo,Dongmei Li,Hao Xin,Qingbo Meng
Photo-generated carrier recombination loss at the CZTSSe/CdS front interface is a key issue to the open-circuit voltage ( V OC ) deficit of Cu 2 ZnSnS x Se 4− x (CZTSSe) solar cells. Here, by the aid of an easy-handling spin-coating method, a thin PCBM ([6,6]-phenyl-C61-butyric acid methyl ester) layer as an electron extraction layer has been introduced on the top of CdS buffer layer to modify CZTSSe/CdS/ZnO-ITO (In 2 O 3 :Sn) interfacial properties. Based on Sn 4+ /DMSO (dimethyl sulfoxide) solution system, a total-area efficiency of 12.87% with a V OC of 529 mV has been achieved. A comprehensive investigation on the influence of PCBM layer on carrier extraction, transportation and recombination processes has been carried out. It is found that the PCBM layer can smooth over the CdS film roughness, thus beneficial for a dense and flat window layer. Furthermore, this CZTSSe/CdS/PCBM heterostructure can accelerate carrier separation and extraction and block holes from the front interface as well, which is mainly ascribed to the downward band bending of the absorber and a widened space charge region. Our work provides a feasible way to improve the front interfacial property and the cell performance of CZTSSe solar cells by the aid of organic interfacial materials.
研究领域:
材料科学
·
太阳能
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
CRYSTAL GROWTH & DESIGN
·
2024
·
IF 3.2
Yanyan Peng,Dayong Jiang,Man Zhao,Mingyang Li,Haoda Li,Siyuan Li
Hybrid heterojunction photodetectors (PDs) have received widespread attention due to their excellent optoelectronic performance. This study investigated the combination of ZnO with organic–inorganic perovskites to develop a high-performance heterojunction hybrid PD. The developed PD showed optical responses of 0.70 and 0.86 A/W at 350 and 850 nm. The detectivity achieved values of 3.98 × 1011 and 4.92 × 1011 Jones, while the external quantum efficiency stood at 246.59 and 125.31%. In addition, the PD displays broad-band responsivity to illumination ranging from ultraviolet to near-infrared light. Incorporating [6,6]-phenyl-C61 butyric acid (PCBM) into the perovskite film to form a bulk heterojunction further enhances the responsivity, detectivity, and photoconductivity gain. This enhancement is attributed to the improved separation of electron–hole pairs, resulting in optical responses of 3.55 and 3.94 A/W at 350 and 850 nm, respectively. Moreover, detectivity was measured with values of 3.64 × 1012 Jones and 4.04 × 1012 Jones, with external quantum efficiencies of 1258.88% and 574.82%.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 11
·期 1
·147
·
IF 3.164
Mao Jiang,Qiaoli Niu,Xiao Tang,Heyi Zhang,Haowen Xu,Wentao Huang,Jizhong Yao,Buyi Yan,Ruidong Xia
The commonly used electron transport material (6,6)-phenyl-C61 butyric acid methyl ester (PCBM) for perovskite solar cells (PSC) with inverted planar structures suffers from properties such as poor film-forming. In this manuscript, we demonstrate a simple method to improve the film-forming properties of PCBM by doping PCBM with poly(9,9-dioctylfluorene-co-benzothiadiazole) (F8BT) as the electron transport layer (ETL), which effectively enhances the performance of CH3NH3PbI3based solar cells. With 5 wt % F8BT in PCBM, the short circuit current (JSC) and fill factor (FF) of PSC both significantly increased from 17.21 ± 0.15 mA·cm−2and 71.1 ± 0.07% to 19.28 ± 0.22 mA·cm−2and 74.7 ± 0.21%, respectively, which led to a power conversion efficiency (PCE) improvement from 12.6 ± 0.24% to 15 ± 0.26%. The morphology investigation suggested that doping with F8BT facilitated the formation of a smooth and uniform ETL, which was favorable for the separation of electron-hole pairs, and therefore, an improved performance of PSC.Keywords:perovskite solar cells;surface morphology;PCBM;doping
研究领域:
材料科学
·
能源研究
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF PHOTOENERGY
·
2017
·Vol. 2017
·期 1
·2562968
·
IF 1.277
Gang Lu,Fengqin He,Shangzheng Pang,Haifeng Yang,Dazheng Chen,Jingjing Chang,Zhenhua Lin,Jincheng Zhang,Chunfu Zhang
Organometal halide perovskite as a promising absorber in solar cells has caught tremendous attention in the past few years. Herein, a hydrophobic PCBM layer was introduced into planar heterojunction perovskite solar cells to form the TiO 2 /PCBM double blocking layer. The bilayer structure assures the formation of a dense, smooth, and pinhole-free blocking layer. And the PCBM layer can also be in favor of larger grain size perovskite film and further passivate the TiO 2 blocking layer. Scanning electron microscope, atomic force microscope, and X-ray diffraction (XRD) results suggest the formation of a uniform and compact CH 3 NH 3 PbI 3− x Cl x perovskite layer on the PCBM-modified TiO 2 blocking layer. The solar cell has reached a PCE up to 16.37%, which is greatly larger than the control device with a PCE of 10.81%.
研究领域:
光伏技术
·
材料科学
·
纳米技术
·
能源材料
✓ 已验证
DOI
高影响因子
ACS Applied Materials & Interfaces
·
2016
·
IF 7.145
Minchao Qin,Junjie Ma,Weijun Ke,Pingli Qin,Hongwei Lei,Hong Tao,Xiaolu Zheng,Liangbin Xiong,Qin Liu,Zhiliang Chen,Junzheng Lu,Guang Yang,Guojia Fang
Indium oxide (In2O3) as a promising n-type semiconductor material has been widely employed in optoelectronic applications. In this work, we applied low-temperature solution-processed In2O3 nanocrystalline film as an electron selective layer (ESL) in perovskite solar cells (PSCs) for the first time. By taking advantages of good optical and electrical properties of In2O3 such as high mobility, wide band gap, and high transmittance, we obtained In2O3-based PSCs with a good efficiency exceeding 13% after optimizing the concentration of the precursor solution and the annealing temperature. Furthermore, to enhance the performance of the In2O3-based PSCs, a phenyl-C61-butyric acid methyl ester (PCBM) layer was introduced to modify the surface of the In2O3 film. The PCBM film could fill up the pinholes or cracks along In2O3 grain boundaries to passivate the defects and make the ESL extremely compact and uniform, which is conducive to suppressing the charge recombination. As a result, the efficiency of the In2O3-based PSC was improved to 14.83% accompanied with VOC, JSC, and FF being 1.08 V, 20.06 mA cm–2, and 0.685, respectively.
研究领域:
材料科学
·
光电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ORGANIC ELECTRONICS
·
2019
·
IF 3.495
Caixia Ren,Yue He,Shiqi Li,Qinjun Sun,Yifan Liu,Yukun Wu,Yanxia Cui,Zhanfeng Li,Hua Wang,Yuying Hao,Yucheng Wu
Organic-inorganic hybrid perovskite solar cells (PSCs) have attracted tremendous attention recently because of their excellent photovoltaic performance . High power conversion efficiency (PCE) and long-term stability of PSCs mainly rely on high crystalline quality of perovskite film, good interface contact between functional layers and matching energy level alignment, which can be achieved by crystal growth regulation and interface engineering. Here, we demonstrate a high-performance planar heterojunction PSCs with PCBM/N2200 as double electron transport layers (ETLs). The N2200-based PSCs exhibit an average PCE of 15.50%, which obviously surpass the average PCE of 14.18% of conventional PSCs with only PCBM as ETLs. In comparison with the conventional PSCs, the PCBM/N2200 double ETLs increase built-in potential of devices and decrease interfacial energy barrier of MAPbI 3 /PCBM and then result in higher V oc . Moreover, non-fullerene material N2200 can efficiently inhibit the aggregation of PC 61 BM, promote perovskite surface grain growth and passivate perovskite interface defect. All these are beneficial for electron transfer and extraction, and thereby increase the short-circuit current ( J sc ) and the Fill Factor (FF) of N2200 PSCs. In addition, N2200 obviously improve the air- and illumination-stability of PSCs. These results could stem from the interaction between PbI 2 as Lewis acid and N2200 as Lewis base. This work indicate that N2200/PC 61 BM as double ETL is an effective way to get high photovoltaic performance for the inverted planar heterojunction PSCs.
研究领域:
材料科学
·
光伏技术
✓ 已验证
产品关联
DOI
高影响因子
ORGANIC ELECTRONICS
·
2018
·
IF 3.68
Zhihai Liu,Xiaoyin Xie,Guanchen Liu,Eun-Cheol Lee
We introduced phenyl-C61-butyric acid methyl ester (PCBM) as an electron transport layer to improve the performance of metal-oxide-free perovskite solar cells (PSCs) using high-conductivity poly(3,4-ethylenedioxylenethiophene):poly(styrene sulfonate) (PEDOT:PSS) as the cathode. The work function of the PEDOT:PSS was tuned from −5.08 to −4.05 eV by using polyethylenimine, improving the electron collection. Using PCBM improved the electron transport and suppressed the charge recombination of the PSCs. The power-conversion efficiency (PCE) of the rigid PSCs (on glass substrates) was significantly improved from 12.5% to 13.9%, and the open-circuit voltage, short-circuit current density, and fill factor were improved simultaneously. The long-term stability of the PSCs was also improved: the PCE degradation of the PSCs without encapsulation decreased from 18.4% to 13.0% after 114 h. Using a 37-nm PCBM layer, the flexible PSCs on polyethylene naphthalate substrates exhibited a high PCE of 11.4% with good bendability. Our results indicate that using PCBM as an electron transport layer in metal-oxide-free PSCs is a feasible method for the large-scale roll-to-roll production of PSCs.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
OPTICAL MATERIALS
·
2022
·
IF 3.754
Yonglei Xing,Wenbo Lv,Jie Liu,Jitao Huang
Because of the good passivation effect of PCBM on the perovskite surface, ion-migration-related phenomena are barely discussed in the inverted perovskite solar cells (PSCs). However, when applying the ZnO as electron transport material (ETM) to replace PCBM, the resulting PSC device exhibits J - V hysteresis to some extent. Here we compare the J - V performances of the inverted PSC devices using ZnO and PCBM as ETMs. We find that the use of the ZnO results in an obvious light soaking phenomenon and J - V hysteresis. While the use of PCBM leads to the elimination of the J - V hysteresis. The time-dependent photocurrent response and the capacitance-frequency ( C – F ) measurement suggest the existence of fast and slow ion migration in the MAPbI 3 film. The activation energy ( E a ) for the slow ion migration reduces under illumination, being the main reason for the J - V hysteresis for the ZnO-based PSC device. While PCBM passivates the slow ion migration, leading to the elimination of the J - V hysteresis.
研究领域:
材料科学
·
光电转换
✓ 已验证
产品关联
DOI
高影响因子
NANO LETTERS
·
2015
·
IF 13.592
Chaoyang Kuang,Gang Tang,Tonggang Jiu,Hui Yang,Huibiao Liu,Bairu Li,Weining Luo,Xiaodong Li,Wenjun Zhang,Fushen Lu,Junfeng Fang,Yuliang Li
Organic–inorganic perovskite solar cells have recently emerged at the forefront of photovoltaics research. Here, for the first time, graphdiyne (GD), a novel two dimension carbon material, is doped into PCBM layer of perovskite solar cell with an inverted structure (ITO/PEDOT:PSS/CH3NH3PbI3–xClx/PCBM:GD/C60/Al) to improve the electron transport. The optimized PCE of 14.8% was achieved. Also, an average power conversion efficiency (PCE) of PCBM:GD-based devices was observed with 28.7% enhancement (13.9% vs 10.8%) compared to that of pure PCBM-based ones. According to scanning electron microscopy, conductive atomic force microscopy, space charge limited current, and photoluminescence quenching measurements, the enhanced current density and fill factor of PCBM:GD-based devices were ascribed to the better coverage on the perovskite layer, improved electrical conductivity, strong electron mobility, and efficient charge extraction. Small hysteresis and stable power output under working condition (14.4%) have also been demonstrated for PCBM:GD based devices. The enhanced device performances indicated the improvement of film conductivity and interfacial coverage based on GD doping which brought the high PCE of the devices and the data repeatability. In this work, GD demonstrates its great potential for applications in photovoltaic field owing to its networks with delocalized π-systems and unique conductivity advantage.
研究领域:
光伏
·
材料科学
·
纳米技术
·
能源材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）