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, Physical
Hyemin Jo, Jai Kyeong Kim, Junghwan Kim, Tae-Yeon Seong, Hae Jung Son, Jeung-Hyun Jeong, Hyeonggeun Yu
Summary: By using atomic layer deposition (ALD) of ZnO buffer at a low temperature, the interfacial band alignment can be enhanced, resulting in an increased photocurrent density above 35 mA/cm(2) at the band gap of PbS quantum dots of 1.18 eV. The electron barrier with ALD-ZnO is 0.55 eV lower compared to sol-gel ZnO, and the photoactivation of shallow gap states in ALD-ZnO induces band bending for efficient electron tunneling from PbS to ZnO, leading to improved device lifetime under constant illumination at 1-sun.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Physical
Wei Wang, Yiling Xie, Fangfang He, Yuan Wang, Weinan Xue, Yan Li
Summary: In quantum dot-based solar cells (QDSCs), the balance between QD loading and TiO2 film thickness significantly affects the performance. A relatively thin photoanode prepared by a cationic surfactant-assisted multiple deposition procedure achieved a high QD loading comparable to that of the commonly used thick photoanode. Under optimized conditions, the Zn-Cu-In-Se and Zn-Cu-In-S based QDSCs showed a comparable power conversion efficiency (PCE) to those with significantly thicker photoanodes (over 25.0 μm).
GREEN ENERGY & ENVIRONMENT
(2023)
Article
Nanoscience & Nanotechnology
Rabia Bashir, Muhammad Kashif Bilal, Waqar Ahmad, Amna Bashir, Sana Ullah Asif, Huan Liu, Jiyang Xie, Awais Ali, Wanbiao Hu
Summary: The study demonstrates the use of high stability ZnO nanoparticles synthesized at low temperatures in PbS CQDSCs, showing excellent performance with high fill factor and conversion efficiency. By achieving high recombination resistance, effective control over PbS CQDSCs is realized, while also displaying outstanding storage stability in ambient environments, paving the way for the development of low-temperature flexible PbS CQD solar cells.
ACS APPLIED NANO MATERIALS
(2021)
Article
Engineering, Electrical & Electronic
Satyendra Prasad, Sadanand, Pooja Lohia, D. K. Dwivedi
Summary: This work evaluates the performance of PbS-EDT and Cu2O hole transport layer, achieving a power conversion efficiency of 15.93% for quantum dot solar cells. The study focuses on device optimization, doping densities analysis, resistance analysis, and finalizing a solar cell device with specific doping densities and resistance values. All simulations were conducted using the SCAPS-1D simulator.
OPTICAL AND QUANTUM ELECTRONICS
(2021)
Article
Chemistry, Multidisciplinary
Long Hu, Qi Lei, Xinwei Guan, Robert Patterson, Jianyu Yuan, Chun-Ho Lin, Jiyun Kim, Xun Geng, Adnan Younis, Xianxin Wu, Xinfeng Liu, Tao Wan, Dewei Chu, Tom Wu, Shujuan Huang
Summary: The research demonstrates that using potassium triiodide (KI3) additives can effectively optimize the surface chemistry of PbS CQDs, eliminate undesired atom configurations and surface defects, reduce surface trap states, and significantly improve device stability and efficiency.
Review
Chemistry, Multidisciplinary
Qian Zhao, Rui Han, Ashley R. Marshall, Shuo Wang, Brian M. Wieliczka, Jian Ni, Jianjun Zhang, Jianyu Yuan, Joseph M. Luther, Abhijit Hazarika, Guo-Ran Li
Summary: Colloidally grown nanosized semiconductors, especially colloidal quantum dots (QDs), have great potential as optoelectronic materials. These materials show excellent properties in solar photovoltaics and display technology, with low cost and high performance. This article explores the possibilities of different deposition techniques to bring QD-based solar cells to an industrial level, and discusses the challenges faced by perovskite QD solar cells in achieving large-area fabrication.
ADVANCED MATERIALS
(2022)
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
Energy & Fuels
Qi Xiao, Bing Xia, Peilin Liu, Yang Yang, Gaoyuan Yang, Jing Liu, Shuaicheng Lu, Xuezhi Zhao, Ciyu Ge, Duo Chen, Junrui Yang, Guijie Liang, Kanghua Li, Xinzheng Lan, Zewen Xiao, Jianbing Zhang, Liang Gao, Jiang Tang
Summary: The study proposes a facile patch-passivation strategy for developing efficient PbS CQD IR solar cells. By adding TPPO Lewis base to PbS CQDs, uncoordinated Pb2+ can be passivated, suppressing non-radiative recombination. The TPPO-passivated devices achieve high PCE and promising open-circuit voltage in the IR spectrum.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Multidisciplinary
D. Vinoth Pandi, V. Saraswathi, M. R. Venkatraman, N. Muthukumarasamy, S. Agilan, D. Velauthapillai, K. Brindhadevi, A. Pugazhendhi
Summary: PbS quantum dots and PbS quantum dots-sensitized ZnO nanostructures with rod-like shape were successfully synthesized. The prepared PbS quantum dots exhibited significant visible light absorption, and the light absorption of PbS quantum dots-sensitized ZnO nanorods was higher than that of bare ZnO nanorods. The uniform development of rod-like ZnO nanostructures with deposition of PbS quantum dots on the surface was observed from electron microscope images. The solar cells made using PbS quantum dots-sensitized ZnO nanorods achieved a power conversion efficiency of 1.2%.
MATERIALS TODAY CHEMISTRY
(2023)
Review
Chemistry, Physical
Akash S. Rasal, Sudesh Yadav, Anil A. Kashale, Ali Altaee, Jia-Yaw Chang
Summary: This review discusses the factors influencing the performance stability of QDSSCs and provides insights into the mechanisms causing degraded performances. It also presents cutting-edge strategies for improving the overall performance stability of QDSSCs.
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
Nanoscience & Nanotechnology
Sumin Bae, Matthew Duff, Jun Young Hong, Jung-Kun Lee
Summary: By combining a Fabry-Perot resonator and a distributed Bragg reflector, the tradeoff between light absorption and charge transport in PbS colloidal quantum dot (CQD) solar cells is reduced. The Fabry-Perot resonance enhances light absorption near the resonant wavelength of the distributed Bragg reflector without changing the CQD film thickness. The power conversion efficiency of the PbS CQD solar cells increases by 54% when the Fabry-Perot resonance and distributed Bragg reflector are combined.
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
Chemistry, Multidisciplinary
Shiwen Fang, Jiaxing Huang, Ran Tao, Qi Wei, Xiaobo Ding, Shota Yajima, Zhongxin Chen, Weiya Zhu, Cheng Liu, Yusheng Li, Ni Yin, Leliang Song, Yang Liu, Guozheng Shi, Hao Wu, Yiyuan Gao, Xin Wen, Qi Chen, Qing Shen, Youyong Li, Zeke Liu, Yuan Li, Wanli Ma
Summary: In this study, a hybrid strategy is explored to improve the quality of ZnO electron transport layer (ETL) by incorporating stable organic open-shell donor-acceptor type diradicaloids. The high electron-donating feature of the diradical molecules effectively passivates the deep-level trap states and enhances the conductivity of ZnO NP film. This work not only achieves a high power conversion efficiency of 13.54% in lead sulfide (PbS) colloidal quantum dot solar cells, but also inspires the exploration of general strategies using radical molecules to construct high-efficiency solution-processed optoelectronic devices.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ileana Recalde, Andres. F. Gualdron-Reyes, Carlos Echeverria-Arrondo, Alexis Villanueva-Antoli, Jorge Simancas, Jhonatan Rodriguez-Pereira, Marcileia Zanatta, Ivan Mora-Sero, Victor Sans
Summary: The use of non-toxic and low-cost alpha-tocopherol (vitamin E) improves the photophysical properties and stability of perovskite nanocrystals (PNCs). Alpha-tocopherol restores the luminescent features and reduces surface defects of aged CsPbI3 PNCs. It also enables the formulation of PNCs-acrylic polymer composites with improved luminescent features and long-term stability.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Vladimir S. Chirvony, Isaac Suarez, Jesus Sanchez-Diaz, Rafael S. Sanchez, Jesus Rodriguez-Romero, Ivan Mora-Sero, Juan P. Martinez-Pastor
Summary: An unusual spectrally reproducible near-IR random lasing is observed in chemically stabilized polycrystalline films of formamidinium tin triiodide perovskite. The high Q-factor and low ASE threshold of the lasing are achieved. The spectral stability is explained by the large inhomogeneous broadening of the emitting centers in Sn-based perovskites.
ADVANCED MATERIALS
(2023)
Article
Engineering, Chemical
Francois Larouche, Frederic Voisard, Kamyab Amouzegar, Georges Houlachi, Patrick Bouchard, Ashok Vijh, George P. Demopoulos
Summary: Orthorhombic LiFePO4 (LFP) is a reversible cathodic material for lithium-ion batteries. A green delithiation process for LFP recycling based on CO2 and hydrogen peroxide is optimized with a temperature of 20 degrees C, a CO2 pressure of 2 atm, and a H2O2 to LFP molar ratio of 1.25. The reaction mechanism is controlled by nucleation and growth, with CO2 acting as a buffering agent to neutralize LiOH formation.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Rana Yekani, Hsien-chieh Chiu, Dallas Strandell, Zhuoran Wang, Stephanie Bessette, Raynald Gauvin, Patanjali Kambhampati, George P. Demopoulos
Summary: This study investigates the origin of inductance and its relationship with hysteresis in hybrid perovskite solar cells (PSCs) using two different electron transport layer (ETL) structures. The results show that the ETL plays a significant role in determining the migration speed of ions and subsequent accumulation. Additionally, the conductivity of the transport layers influences both the inductive features and the region of recombination, ultimately affecting the hysteresis locus.
Article
Nanoscience & Nanotechnology
Isaac G. Sonsona, Manuel Carrera, Miriam Mas-Montoya, Rafael S. Sanchez, Patricio Serafini, Eva M. Barea, Ivan Mora-Sero, David Curiel
Summary: Interfaces between photoactive perovskite layer and selective contacts are crucial for the performance of perovskite solar cells (PSCs). The properties of the interface can be modified using molecular interlayers between the halide perovskite and the transporting layers. This study introduces two structurally related molecules, TACB and TTAI, which can self-assemble through reciprocal hydrogen bond interactions. By combining these molecules with well-known hole transporting layers (HTLs), an improved photovoltaic performance was achieved in PSCs with inverted configuration.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Patricio Serafini, Alexis Villanueva-Antoli, Samrat Das Adhikari, Sofia Masi, Rafael S. Sanchez, Jhonatan Rodriguez-Pereira, Bapi Pradhan, Johan Hofkens, Andres F. Gualdron-Reyes, Ivan Mora-Sero
Summary: In this study, the introduction of guanidinium (GA+) during the synthesis of high-quality Cs(1-x)GA(x)PbI(3) perovskite nanocrystals (PNCs) was explored as a promising approach for the fabrication of efficient bright-red light-emitting diodes (R-LEDs). The substitution of Cs by 10 mol % GA allowed the preparation of mixed-cation PNCs with PLQY up to 100% and long-term stability for 180 days. This substitution compensated intrinsic defect sites and suppressed the non-radiative recombination pathway, leading to R-LEDs with improved performance and stability.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Juanita Hidalgo, Yu An, Dariia Yehorova, Ruipeng Li, Joachim Breternitz, Carlo A. R. Perini, Armin Hoell, Pablo P. Boix, Susan Schorr, Joshua S. Kretchmer, Juan-Pablo Correa-Baena
Summary: Preferred crystallographic orientation in polycrystalline films is influenced by the solvent of the precursor solution and the organic A-site cation. Dimethylsulfoxide affects the early stages of crystallization and induces preferred orientation by preventing colloidal particle interactions, while methylammonium A-site cation leads to a higher degree of preferred orientation compared to formamidinium. Surface energy differences between different crystal facets explain the difference in preferred orientation. Different A-site cations impact ion density and accumulation, leading to increased hysteresis in bromine-based perovskite solar cells.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Akun Liang, Robin Turnbull, Catalin Popescu, Ismael Fernandez-Guillen, Rafael Abargues, Pablo P. Boix, Daniel Errandonea
Summary: The crystal structure of CH3NH3PbBr3 perovskite under high-pressure conditions was studied using synchrotron-based powder X-ray diffraction. It was found that after the previously reported phase transitions, there is a third crystalline phase transition at 4.6 GPa, which contradicts previous studies. X-ray diffraction measurements confirmed that CH3NH3PbBr3 remained crystalline up to at least 7.6 GPa. The new high-pressure phase showed abrupt changes in unit-cell parameters and a 3% decrease in unit-cell volume.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Materials Science, Multidisciplinary
Hamid Pashaei Adl, Setatira Gorji, Guillermo Munoz-Matutano, Andres F. Gualdron-Reyes, Isaac Suarez, Vladimir S. Chirvony, Ivan Mora-Sero, Juan P. Martinez-Pastor
Summary: This study focuses on the Superradiance (SR) emission observed in superlattices (SLs) formed by CsPbBr3 and CsPbBrI2 nanocrystals (NCs). Micro-Photoluminescence spectra and transients of CsPbBr3 SLs are measured to extract information about the SR states and uncoupled domains of NCs. The study finds that CsPbBr3 SLs with homogeneous SR lines have shorter lifetimes compared to thin films made with the same NCs, and the thermal decoherence of the SR exciton state is evident above a certain temperature due to coupling with phonons.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Green & Sustainable Science & Technology
Shweta Singh, Priyanka Kajal, Atul Dhar, Nripan Mathews, Pablo P. Boix, Satvasheel Powar
Summary: This study investigates the environmental performance of high temperature and low temperature processed carbon-based perovskite solar modules (CPSMs) and finds that both energy consumption and material selection have significant environmental impacts. High temperature processed CPSMs have a greater environmental impact compared to low temperature processed CPSMs.
JOURNAL OF CLEANER PRODUCTION
(2023)
Article
Materials Science, Ceramics
Thais C. A. da Silva, Carolina Fernandez-Saiz, Rafael S. Sanchez, Andres F. Gualdron-Reyes, Ivan Mora-Sero, Beatriz Julian-Lopez
Summary: This work presents a fast one-step methodology to fabricate small CsPb(ClxBr1-x)(3) nanocrystals with good control of the particle size and shape by using a Soft Chemistry strategy (ligand-mediated controlled growth) and microwave heating. The protocol is designed to closely mimic the chemistry involved in the hot injection process, facilitating its adoption by the perovskite research community.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Chemistry, Physical
Seul-Yi Lee, Patricio Serafini, Sofia Masi, Andres F. Gualdron-Reyes, Camilo A. Mesa, Jhonatan Rodriguez-Pereira, Sixto Gimenez, Hyo Joong Lee, Ivan Mora-Sero
Summary: In this study, a highly efficient photoanode electrode for the degradation of pollutants was prepared by directly forming nanoscale perovskite on the surface of mesoporous titanium dioxide film, and optimization was achieved by introducing a thin aluminum oxide coating layer. A photovoltaic/PEC tandem system was also developed to supply high voltage for efficient oxidation of pollutants without an external bias.
ACS ENERGY LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Sara Miralles-Comins, Marcileia Zanatta, Andres F. Gualdron-Reyes, Jhonatan Rodriguez-Pereira, Ivan Mora-Sero, Victor Sans
Summary: Halide perovskite nanocrystals (PNCs) are potential visible-light photocatalysts due to their high absorption coefficient, tolerance to defects, and tunable band structure. However, their sensitivity to humidity, light, heat, and water limits their application in solar driven photocatalytic processes. In this study, PNCs were embedded in polymeric ionic liquids (PILs@PS) to fabricate stable composites for the photodegradation of organic dyes.
Article
Chemistry, Multidisciplinary
Samrat Das Adhikari, Andres F. Gualdron Reyes, Subir Paul, Jeevan Torres, Beatriu Escuder, Ivan Mora-Sero, Sofia Masi
Summary: Perovskite nanocrystals (PeNCs) synthesized by colloidal solution methods have unique optical features, such as a tuneable band gap and narrower photoluminescence emission compared to their bulk counterpart. However, their stability needs to be improved for application in optoelectronic devices. This can be achieved by stabilizing the PeNC phases and passivating the surface using alternative methods, such as combining them with organic or inorganic materials. This perspective discusses the challenges, opportunities, and potential applications of core/shell PeNCs, as well as the synthesis steps and optical properties.
Article
Biochemical Research Methods
Jaume Noguer-Gomez, Pablo P. Box, Rafael Abargues
Summary: This article presents a protocol for the annealing-free and antisolvent-free synthesis of perovskite nanocrystals, providing detailed steps for preparing the precursor solutions and controlling processing parameters to achieve precise control over the nanocrystal size.
