SOLAR ENERGY MATERIALS AND SOLAR CELLS
·
2017
·
IF 4.784
Liyan Yang,Yu Yan,Feilong Cai,Jinghai Li,Tao Wang
Conjugated polymer poly(9-vinylcarbazole) (PVK) has been explored as an efficient hole transport material (HTM) to replace poly(3,4-ethylenedio-xythiophene): poly(styrenesulfonate) (PEDOT:PSS) for the preparation of p-i-n type, inverted planar heterojunction perovskite solar cells. The PVK film can be facilely deposited by room-temperature solution-casting without any doping or post treatments. Using MAPbI 3 as the photoactive layer, a 15.8% stabilized power conversion efficiency was achieved in ITO/PVK/MAPbI 3 /PCBM/Ag devices, which is a significant improvement compared with 12.1% from devices using PEDOT:PSS as the HTM. The perovskite photoactive layer cast on PVK HTM has higher crystallinity and less PbI 2 residues, leading to a higher charge recombination resistance of the device. After a storage of 1000 h, the PCE of PVK- and PEDOT:PSS- based devices dropped to 82.5% and 56% respectively, and demonstrated that the PVK-based perovskite devices is more stable compared with the PEDOT:PSS-based devices.
研究领域:
材料科学
·
太阳能
·
有机电子
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DOI
高影响因子
ORGANIC ELECTRONICS
·
2020
·
IF 3.31
Shaowei Wang,Hongyuan Li,Bowen Zhang,Zu-an Guo,Hari Bala,Shujuan Yao,Jingyi Zhang,Can Chen,Wuyou Fu,Jianliang Cao,Guang Sun,Zhanying Zhang
The quality of the photoactive layer gravely affects the characteristics and stabilities of photovoltaic device . Here, by introducing polyethylene glycol (PEG) into the methylammonium lead trihalide (MAPbI 3 ) precursor solution, we fabricate high-quality MAPbI 3 perovskite film with high coverage and large grain size . By adjusting the PEG concentration into the perovskite film, the hole-conductor-free mesoporous perovskite solar cell with carbon electrode exhibits a boosted power conversion efficiency of 11.62%, which originates primarily from the enhancements of light absorption and acceleration of carriers transfer. Meanwhile, hygroscopic PEG protects the perovskite film from moisture, which leads to the perovskite film and corresponding device exhibit superior stability. This work confirms a high-efficiency and feasible strategy using polymer materials to enhance the performance in power conversion efficiency and stability of perovskite solar cells.
研究领域:
材料科学
·
可再生能源
·
光伏技术
✓ 已验证
DOI
高影响因子
Nanomaterials
·
2025
·Vol. 15
·期 4
·286
·
IF 4.3
Heng Li,Yongtao Huang,Muyan Zhu,Pingyuan Yan,Chuanxiang Sheng
The perovskite solar cell (PSC) is undergoing intense study to meet sustainable energy and environmental demands. However, large-sized solar cells will degrade the power conversion efficiency, thus concentrating light on small-size devices would be a solution. Here, we report the performance of a p–i–n structured device using CH3NH3PbI3(MAPbI3) as the active layer with an area of 6 mm2. We prove that the power output would be up to 4.2 mW under 10 Suns compared to the 0.9 mW obtained under 1 Sun; however, this results in an actual efficiency drop of the PSC. Further, using a SCAPS device simulation, we found that the intrinsic properties, such as mobility and defect density, of MAPbI3has no profound influence on the relationship between light intensity and power conversion efficiency (PCE), but the series resistance is the dominant limiting factor on the performance of the PSC under high illumination intensities. Our work suggests the potential of perovskite in concentrating photovoltaics and makes recommendations for future development.
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DOI
PubMed
高影响因子
Nanoscale Research Letters
·
2019
·Vol. 14
·期 1
·1-6
·
IF 3.159
Shan Dan,Tong Guoqing,Cao Yunqing,Tang Mingjun,Xu Jun,Yu Linwei,Chen Kunji
Hybrid organic-inorganic perovskites (HOIPs) exhibit long electronic carrier diffusion length, high optical absorption coefficient, and impressive photovoltaic device performance. At the core of any optoelectronic device lie the charge transport properties, especially the microscopic mechanism of scattering, which must efficiently affect the device function. In this work, CH 3 NH 3 PbI 3 (MAPbI 3 ) films were fabricated by a vapor solution reaction method. Temperature-dependent Hall measurements were introduced to investigate the scattering mechanism in MAPbI 3 films. Two kinds of temperature-mobility behaviors were identified in different thermal treatment MAPbI 3 films, indicating different scattering mechanisms during the charge transport process in films. We found that the scattering mechanisms in MAPbI 3 films were mainly influenced by the decomposed PbI 2 components, which could be easily generated at the perovskite grain boundaries (GBs) by releasing the organic species after annealing at a proper temperature. The passivation effects of PbI 2 in MAPbI 3 films were investigated and further discussed with emphasis on the scattering mechanism in the charge transport process.
研究领域:
材料科学
·
凝聚态物理
·
半导体物理
·
光伏器件
·
纳米材料
·
表面与界面科学
·
功能材料
·
电子输运
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Jinhuan Jiang,Chenyang Shi,Lixin Song,Pinfan Du,Wen Guo,Jie Xiong
Non-radiative recombination due to high-density defects at the bottom of the perovskite layer and in the SnO 2 ETL layer is not favourable for charge transfer. In this work, disodium diphenylsulfone-4,4′-dichloro-3,3′-disulfonate (SDCDPS) was introduced into SnO 2 solution to prepare a high-quality pinhole-free SnO 2 film. The sulfonate of SDCDPS collaborates with diphenylsulfone to passivate uncoordinated Sn 4+ in SnO 2 ETL, which will reduce the work function (W F ) in the SnO 2 , increasing the conduction of SnO 2 film and reducing the charge recombination of pre-buried interface. Besides, the sulfonate and diphenysulfone groups also passivate the uncoordinated Pb 2+ in perovskite to increase the crystallinity of perovskite and reduce non-radiative recombination. After SDCDPS modification, the power conversion efficiency of perovskite solar cells significantly increased from 18.2% to 21.2% with hysteresis factor decreasing from 10.4% to 3.35%. Also, the modified device shows well stability due to the enhancement of perovskite crystallization and the reducing defects. Under relative humidity of ∼60%, the PCE of the unencapsulated device modified by SDCDPS remains at 81% of the initial device after 720h. This work offers a dependable method for enhancing the quality of the buried interface in PSC and to pursue productive and consistent devices.
研究领域:
材料科学
·
能源科学
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
LANGMUIR
·
2025
·
IF 3.9
Yao Guo,Xianchang Li,Min Jian,Shiding Zhang,Jianxin Li,Yue Li,Yinghui Xue,Yuhua Wang,Qing Shen
The interface between the MAPbI3 perovskite and layered ZnIn2S4 was investigated by first-principles calculations combined with the experimental study. To begin with, four different types of interfacial configurations were established and carefully examined. The interaction occurring between MAPbI3 and ZnIn2X4 is mainly determined by weak van der Waals forces. The interfacial charge reorganization implies electron transfer from the MAPbI3 layer to the ZnIn2X4 layer across the interface. The PbI/ZnIn2X4 interface exhibits stronger interfacial interactions compared to those of the MAI/ZnIn2X4 counterpart. The interfacial adhesion work was found to depend more on the surface termination of MAPbI3 than on that of ZnIn2X4. Conversely, it was discovered that the interface potential drop, work function, and dielectric function within the MAPbI3/ZnIn2X4 interfaces are predominantly regulated by ZnIn2X4 termination rather than MAPbI3 termination. Chalcogen vacancies cause enhanced interfacial interactions owing to electron rearrangements at the interfaces. In the end, the MAPbI3/ZnIn2S4 heterostructure was successfully fabricated and then characterized, which effectively verified first-principles calculations. This study offers fundamental insights into the development of MAPbI3/ZnIn2X4 heterostructures, advancing perovskite-based optoelectronic devices.
研究领域:
材料科学
·
凝聚态物理
·
光伏技术
·
计算材料学
·
光电子器件
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2019
·
IF 15.548
Tao Wang,Gang Lian,Liping Huang,Fei Zhu,Deliang Cui,Qilong Wang,Qingbo Meng,Haihui Jiang,GuangJun Zhou,Ching-Ping Wong
Rendering high-quality perovskite films is integral for excellent performance of optoelectronic devices and highly challenging as well. Here, we establish a two-round pressure-assisted solvent-engineering (TPS) strategy to achieve remarkable enhancement in grain size (~400 μm 2 ), crystallinity , orientation and, especially, boundary fusion. Crystal growth and boundary welding of MAPbI 3 grains are mainly attributed to pressure-enhanced ion diffusion and defect elimination, which facilitates lateral enlargement of grains and formation of ultra-smooth film. Dramatic diminution of trap density determines long carrier lifetime and improved lateral charge transport, as demonstrated by the superior performance of MAPbI 3 -based photodetectors , e.g. ultrahigh on/off ratio (~10 6 ), good stability, fast response, high responsivity and high detectivity (1.3 × 10 14 Jones). When upconversion nanoparticles are uniformly assembled on the high-quality MAPbI 3 films, interestingly, the hybrid device exhibits dominantly elevated photoelectric capability in near infrared range (NIR, 980 nm) with long-term stability in ambient air. The results and method pave a novel way for ongoing fabrication of efficient and stable optoelectronic devices based on high-quality perovskite films.
研究领域:
材料科学
·
光电技术
✓ 已验证
产品关联
DOI
高影响因子
SOLAR ENERGY
·
2021
·
IF 5.742
Yin Huang,Hang Zhong,Wenbo Li,Duoling Cao,Ya Xu,Li Wan,Xu Zhang,Xiuhua Zhang,Yuebin Li,Xiaomimg Ren,Zhiguang Guo,Xianbao Wang,Dominik Eder,Shimin Wang
The potential of perovskite solar cells as a representative alternative to silicon-based solar cells has become significant owing to their unparalleled advancement in efficiency. However, the intrinsic instability of perovskite still hinders their large-scale commercial application, particularly of the decomposition of perovskite during device operation. To address this issue, an acetate-ion-functionalized polar ionic liquid, 1-allyl-3-methylimidazolium acetate (AMIMOAc), is used as an additive in MAPbI 3 film. FTIR spectroscopy measurements show that AMIMOAc can anchor the organic cations via hydrogen bonding and enhance the Pb–O interaction in modified MAPbI 3 , leading to a continuous and dense morphology to increase the stability of MAPbI 3 . After optimizing the concentration of AMIMOAc, an additional interfacial modification layer accelerates the electron extraction and transport. By the synergy of both additive engineering and interface modification, the device not only achieves a high efficiency of 15.16%, but also maintains 93% of the initial PCE after 500 h, showing significantly improved stability. These results pave the way to a new strategy to improve efficiency and long-term stability of carbon counter electrode-based 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
ACS Applied Materials & Interfaces
·
2023
·
IF 9.5
Shaocong Duan,Qing Sun,Gang Liu,Jianguo Deng,Xiangxin Meng,Bo Shen,Die Hu,Bonan Kang,S. Ravi P. Silva
Organic–inorganic hybrid perovskite solar cells are fabricated using polycrystalline perovskite thin films, which possess high densities of point and surface defects. The surface defects of perovskite thin films are the key factors that affect the device performance. Therefore, the reduction of harmful defects is the primary task for improving device performance. Therefore, in this study, high-quality perovskite thin films are prepared using an ionic liquid, dithiocarbamate diethylamine (DADA), to passivate the interface. The electron-rich sulfur atom in the DADA molecule chelates with the uncoordinated lead ion in the perovskite films, and the diethylammonium cation forms a hydrogen bond with the free iodine ion, which further improves the passivation. The synergistic passivation and improved morphology of the perovskite thin films substantially reduce the number of charged defects on the film surface and prolong the carrier lifetime. In addition, the DADA surface treatment increases the work function of the perovskite film, which is beneficial for carrier transport. Under standard solar-lighting conditions, the power conversion efficiency (PCE) of the device increases from 19.13 to 21.36%, and the fill factor is as high as 83.17%. Owing to both the hydrophobicity of DADA molecules and the passivation of ion defects, the PCE of the device remains above 80%, even for the device stored for 500 h in air at a relative humidity of 65%, and the device stability is substantially improved.
研究领域:
材料科学
·
光伏技术
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2024
·
IF 8.3
Yan Wang,Qin Cao,Xuwu Xiang,Jiangsheng Yu,Jie Zhou
Improving the quality of the buried interface is decisive for achieving stable and high-efficiency perovskite solar cells. Herein, we report the interface engineering by using dipolar 2,4-difluoro-3,5-dichloroaniline (DDE) as the adhesive between titanium dioxide (TiO2) and MAPbI3. By manipulation of the anchoring groups of DDE, this molecule not only passivated defects of TiO2 but also optimized the energy level alignment. Furthermore, the perovskite film on the modified TiO2 surface showed improved crystallinity, released residual stress, and reduced trap states. Therefore, these benefits directly contribute to achieving a power conversion efficiency of up to 22.10%. The unencapsulated device retained 90% of initial power conversion efficiencies (PCE) after continuous light illumination for 1000 h and 93% of initial PCE after exposure to air with a relative humidity of 30–40% for over 3000 h. Moreover, the performance of PSCs based on FA0.15MA0.85PbI3 has also increased from 20.48 to 23.51%. Our results demonstrate the effectiveness and universality of dipolar halogen-substituted arylamine (DDE) for enhancing PSC performance.
研究领域:
材料科学
·
光伏技术
·
能源材料
·
化学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Ya Xu,Yin Huang,Hang Zhong,Wenbo Li,Duoling Cao,Congqiang Zhang,Huaxi Bao,Zhiguang Guo,Li Wan,Xu Zhang,Xiuhua Zhang,Yuebin Li,Xianbao Wang,Dominik Eder,Shimin Wang
Methylammonium lead iodide perovskite (MAPbI3) demonstrates the disadvantage of poor long-term stability. Additive engineering is an effective measure to address this issue. We have successfully used an organic molecule called p-methylbenzoammonium iodate (p-MePMAI) as an additive to a perovskite precursor. Results showed that p-MePMAI is an excellent additive with functional groups of benzyl and ammonium ions that can improve the performance and stability of carbon counter electrode (CE)-based MAPbI3 perovskite solar cells. Benzene rings and ammonium ion functional groups of p-MePMAI can electrostatically interact with MAPbI3 when a proper amount of p-MePMAI is added. Moreover, the conjugated structure of the benzene ring can effectively reduce the number of trap states in the perovskite film and significantly inhibit nonradiative recombination, further promoting charge transport. The photoelectric conversion efficiency (PCE) of our prepared carbon CE-based MAPbI3 perovskite solar cells increases from 12.76 to 14.54% with the optimization of p-MePMAI. Notably, the device optimized using p-MePMAI additives maintains 85% of the initial PCE after 500 h.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
ACS Applied Nano Materials
·
2026
·Vol. 9
·期 32
·15412-15425
·
IF 5.8
Jia Zhi,Sun Zerongruo,Zhang Ke,Liu Shuhan,Lan Yunhao,Ma Yunfei,Tian Yuhui,Zeng Peng,Hong Jiajun,Zhang Peng,Wang Ning,Xie Guanshun,Qiao Lijuan,Liu Bingxin
Methanol
serves as a critical breath biomarker for noninvasive
health monitoring, yet its practical gas sensing detection still suffers
from the inferior selective response and inherent biosafety risks
of existing sensing materials. Herein, polyvinylpyrrolidone (PVP)-modified
MAPbI 3 nanotubes have been rationally coated on Au interdigitated
electrodes to construct a noninvasive sensing chip for the selective
detection of methanol in human exhaled breath. Experimental and theoretical
demonstrations reveal that postannealing treatment triggers a template-diffusion
synergistic crystal growth mechanism, which induces the morphological
transformation of MAPbI 3 from nanorods to nanotubes. Such
a unique tubular architecture endows MAPbI 3 with abundant
exposed adsorption sites and favorable mass-transfer channels for
methanol molecules. The optimized, modified MAPbI 3 @PVP/IDE
sensor achieves an ultralow limit of detection of 0.620 ppm toward
methanol, which matches the methanol concentration range in human
exhaled volatile organic compounds. Notably, PVP modification not
only improves the long-term sensing stability of MAPbI 3 toward methanol vapor but also effectively suppresses the leakage
of toxic Pb 2+ , guaranteeing satisfactory biosafety during
human breath detection. This work provides a facile and reliable strategy
for the rational design of high-stability, high-selectivity, and biocompatible
perovskite-based gas sensors toward noninvasive biomarker detection
in human exhaled breath.
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高影响因子
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