Article
Chemistry, Multidisciplinary
Stefan W. Tabernig, Lin Yuan, Andrea Cordaro, Zhi Li Teh, Yijun Gao, Robert J. Patterson, Andreas Pusch, Shujuan Huang, Albert Polman
Summary: We have designed an optically resonant bulk heterojunction solar cell to study the optoelectronic properties of nanostructured p-n junctions. By optimizing the nanoscale pattern, we were able to improve the efficiency of the solar cell by enhancing the absorption and charge-carrier extraction behavior. Our experiments and simulations showed significant improvement in infrared response and current gain in the patterned solar cell compared to the planar reference, demonstrating the importance of nanostructured geometries in enhancing solar cell performance.
Article
Chemistry, Physical
Meitong Chu, Zhonglin Du, Yanying Zhang, Lin Li, Shujie Jiao, Fahad Azad, Shichen Su
Summary: In this study, a graphene/Cu2-xSe composite material was prepared and studied for its photovoltaic and electrochemical properties. By optimizing the ratio of GR:Cu2-xSe and sintering temperature, the QDSCs based on the optimized GR/Cu2-xSe composite CE showed a significant improvement in cell performance compared to other types of CEs, with a PCE of 6.66%. The enhanced performance of the composite CE was attributed to the combination of high catalytic activity of Cu2-xSe nanoparticles and good conductivity of graphene, suggesting that GR/Cu2-xSe composite CE could be a potential candidate for high efficiency QDSCs.
JOURNAL OF ALLOYS AND COMPOUNDS
(2021)
Article
Chemistry, Physical
Miguel Albaladejo-Siguan, David Becker-Koch, Elizabeth C. Baird, Yvonne J. Hofstetter, Ben P. Carwithen, Anton Kirch, Sebastian Reineke, Artem A. Bakulin, Fabian Paulus, Yana Vaynzof
Summary: Light-harvesting devices made from lead sulfide quantum dot absorbers have promising applications in third-generation photovoltaics. Passivating the quantum dot surfaces and managing the excess lead halide can improve device performance and stability.
ADVANCED ENERGY MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
S. Monika, M. Mahalakshmi, N. Subha, M. Senthil Pandian, P. Ramasamy
Summary: A composite material of zero-dimensional graphene quantum dots anchored on reduced graphene oxide sheets was successfully synthesized and used as a counter electrode material for CdS quantum dot sensitized solar cells. The composite showed significantly improved power conversion efficiency for solar cells.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Nataliia Sukharevska, Dmytro Bederak, Vincent M. Goossens, Jamo Momand, Herman Duim, Dmitry N. Dirin, Maksym Kovalenko, Bart J. Kooi, Maria A. Loi
Summary: The recent advancement in phase transfer ligand exchange methods has improved the performance of PbS quantum dots solar cells and simplified film deposition complexity. By using highly stable PbS QD inks, efficient solar cells have been successfully fabricated.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Aryal Krishna Prasad, In-Rok Jo, Soon-Hyung Kang, Kwang-Soon Ahn
Summary: A novel electrochemical method was used to synthesize rGO-Cu2S as a counter electrode for quantum-dot-sensitized solar cell applications. Compared to Pt and Cu2S counter electrodes, rGO-Cu2S displayed lower charge transfer resistance and higher electrocatalytic activity, leading to an improved power conversion efficiency in QDSSCs.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Xing Meng, Yifan Chen, Fan Yang, Jieqi Zhang, Guozheng Shi, Yannan Zhang, Haodong Tang, Wei Chen, Yang Liu, Lin Yuan, Shaojuan Li, Kai Wang, Qi Chen, Zeke Liu, Wanli Ma
Summary: This study explores the potential of using conjugated polymers as hole-transporting layer (HTL) in lead sulfide (PbS) quantum dot solar cells. The precise regulation of the inorganic/organic interface is crucial for achieving high-performance devices. By introducing CsPbl(3) quantum dots as an interfacial layer between the PbS quantum dot active layer and the organic polymer HTL, the interface is mediated and favorable energy level alignment is achieved, resulting in improved charge extraction and reduced interfacial charge recombination. As a result, the photovoltaic performance is efficiently improved from 10.50% to 12.32%. This study may provide new guidelines for the device structural design of quantum dot optoelectronics by integrating different solution-processed semiconductors.
Article
Chemistry, Physical
Bin Bin Jin, Hui Sheng Huang, Shu Ying Kong, Guo Qing Zhang, Biao Yang, Chu Xing Jiang, Ya Zhou, Dan Jun Wang, Jing Hui Zeng
Summary: In this study, ATO/PbSe composite was designed as the counter electrode for QDSSCs, showing enhanced electrocatalytic activity and stability compared to PbSe CE obtained by PVD. The improved performance is attributed to the high specific surface area, permeability, conductivity, and interface connectivity of ATO/PbSe CE, providing more active sites for reduction and fast channels for ion diffusion and electron transport. As a result, the CdS QDSSCs and CdS/CdSe co-sensitized QDSSCs assembled with ATO/PbSe CE exhibited higher power conversion efficiency than PbSe CE obtained by PVD, with stable photovoltaic properties over 200 minutes.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Lan Zhou, Hong Ling Ren, Chun Qin Yang, Ya Xue Wu, Bin Bin Jin
Summary: By using the SILAR method, ATO porous matrix film-supported CuS composites were constructed on a fluorine-doped tin oxide glass substrate, showing excellent electrocatalytic activity. Through optimizing the deposition cycles, a stable efficiency was achieved while improving the conductivity.
INORGANIC CHEMISTRY COMMUNICATIONS
(2022)
Article
Chemistry, Multidisciplinary
Mingyu Li, Shiwu Chen, Xinzhao Zhao, Kao Xiong, Bo Wang, Usman Ali Shah, Liang Gao, Xinzheng Lan, Jianbing Zhang, Hsien-Yi Hsu, Jiang Tang, Haisheng Song
Summary: Infrared solar cells incorporating PbS colloidal quantum dots show high efficiency and stability under full-spectrum illumination, with novel energy-level aligned ZnO thin film and hybrid ligand passivation strategies boosting the performance. The development of matched charge extraction and QD passivation approaches is expected to advance QD optoelectronics technology.
Article
Chemistry, Multidisciplinary
Yunxiang Di, Kun Ba, Yan Chen, Xudong Wang, Mingqing Zhang, Xinning Huang, Yi Long, Mengdi Liu, Shukui Zhang, Weiyi Tang, Zhangcheng Huang, Tie Lin, Hong Shen, Xiangjian Meng, Meikang Han, Qi Liu, Jianlu Wang
Summary: A two-dimensional titanium carbide (Ti3C2Tx) MXene film is introduced as an effective transparent conducting electrode in lead sulfide quantum dot photodiodes. Exhibiting exceptional near-infrared transmittance control, interface engineering enhances performance, yielding high detectivity, extensive dynamic response, and notable bandwidth, thereby advancing infrared photodiode technology.
Article
Materials Science, Multidisciplinary
Kirandeep Kaur, Meenakshi Patyal, Nidhi Gupta, Arun Kumar, Manika Khanuja
Summary: In this study, octaaza-bis-alpha-diimine ligand and its Yb complex grafted upon GO were synthesized and characterized. The composites with varying GO/Yb ratios were investigated as counter electrodes in dye sensitized solar cells. The device fabricated with the highest ratio (1:10) exhibited the highest values in terms of Voc, Jsc, and PCE, showing promising potential to replace traditional Pt counter electrodes.
Article
Chemistry, Multidisciplinary
Ciyu Ge, Erqi Yang, Xinzhao Zhao, Can Yuan, Sen Li, Chong Dong, Yingfeng Ruan, Liuchong Fu, Yuming He, XiangBin Zeng, Haisheng Song, Bin Hu, Chao Chen, Jiang Tang
Summary: This study proposes a simple method to fabricate window materials for infrared solar cells using hydrogen-doped indium oxide films prepared by room temperature magnetron sputtering. The low-temperature annealed conductive electrodes exhibit high mobility and infrared transmittance, improving the performance of the solar cells.
Article
Nanoscience & Nanotechnology
David Becker-Koch, Miguel Albaladejo-Siguan, Yvonne J. Hofstetter, Olga Solomeshch, Darius Pohl, Bernd Rellinghaus, Nir Tessler, Yana Vaynzof
Summary: Efficiency of PbS quantum dot solar cells has increased, with potential for industrial applications. The use of organic layers like PTAA can improve efficiency while avoiding stability issues associated with EDT and MoO3 layers.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Ashish Sharma, Neha Dambhare, Jayanta Bera, Satyajit Sahu, Arup K. Rath
Summary: This study focuses on improving the volume contraction issue of QD films by partially removing OA ligands in the solution phase, leading to crack-free QD films and better performance of solar cells. The introduction of NH4SCN for partial ligand exchange shows increased doping and mobility of PbS QD films, resulting in enhanced photovoltaic efficiency.
ACS APPLIED NANO MATERIALS
(2021)
Article
Energy & Fuels
Bahareh Mehrabimatin, Evgenia P. Gilshteyn, Marthe Emelie Melandso Buan, Olli Sorsa, Hua Jiang, Azam Iraji Zad, Saeed Shahrokhian, Albert G. Nasibulin, Tanja Kallio
Article
Engineering, Electrical & Electronic
Azam Khorasani, Maziar Marandi, Azam Iraji Zad, Nima Taghavinia
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2019)
Article
Energy & Fuels
Z. Sherafati-Tabarestani, M. Samadpour
Article
Materials Science, Multidisciplinary
Maryam Barzegar, Azam Iraji Zad, Ashutosh Tiwari
Article
Energy & Fuels
Mahmoud Samadpour, Hieng Kiat Jun, Parisa Parand, M. N. Najafi
Article
Nanoscience & Nanotechnology
Mona Khafaji, Masoud Zamani, Manouchehr Vossoughi, Azam Iraji Zad
INTERNATIONAL JOURNAL OF NANOMEDICINE
(2019)
Article
Chemistry, Physical
Dorsa-Sadat Mousavi, Parvin Asen, Saeed Shahrokhian, Azam Irajizad
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2020)
Article
Materials Science, Multidisciplinary
Masoumeh Mohammadi, Somayeh Fardindoost, Azam Iraji Zad, Mohammad Almasi-Kashi
MATERIALS RESEARCH EXPRESS
(2020)
Article
Materials Science, Multidisciplinary
Parisa Parand, Mahdi Mohammadi, Amir Abbas Shayegani Akmal, Mahmoud Samadpour, Mehdi Dehghani, Ershad Parvazian
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
Mahmoud Samadpour, Mehdi Dehghani, Parisa Parand, Morteza Natagh Najafi, Ershad Parvazian
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2020)
Article
Chemistry, Physical
Mona Mirmotallebi, Azam Iraji Zad
APPLIED SURFACE SCIENCE
(2020)
Article
Energy & Fuels
Mahmoud Samadpour, Mahsa Heydari, Mahdi Mohammadi, Parisa Parand, Nima Taghavinia
Summary: A low-cost encapsulation package consisting of poly (methyl methacrylate)/ room-temperature vulcanizing silicone rubber (RTV) has been investigated for enhancing the long term stability of perovskite solar cells. Encapsulated cells retained over 80% of the initial efficiency after 1000 hours under harsh environmental conditions.
Article
Energy & Fuels
Narges Darmiani, Azam Iraji Zad, Ali Esfandiar, Parvin Asen
Summary: This study presents a facile strategy for preparing high electrochemical performance fiber-shaped microsupercapacitors. By using a porous Ni-Ti3C2 MXene film as the supporting scaffold to bridge the Ni(OH)(2) active substance with a Cu wire current collector, the fiber-shaped microsupercapacitors exhibit outstanding performance with superior capacitance and high rate capability.
Article
Chemistry, Multidisciplinary
Soheil Ghods, Ali Esfandiar, Azam Iraji Zad, Sajjad Vardast
Summary: High-performance photodetectors are crucial in various scientific and technological fields. We synthesized CdS, CdSe, and PbS nanoparticles using a simple SILAR method. The hybrid devices exhibited excellent wavelength selectivity and high photodetector performance. This fabrication strategy is compatible with the semiconductor industry process and can be used for manufacturing wavelength-tunable and high-performance photodetectors for innovative optoelectronic applications.
Article
Chemistry, Physical
Elham Asadian, Saeed Shahrokhian, Azam Iraji Zad
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2020)