Article
Materials Science, Multidisciplinary
Beatriz Donoso, Victor Bonal, Ivan Torres-Moya, Pedro G. Boj, Jose A. Quintana, Jose M. Villalvilla, Jesus Herrera, Pilar Prieto, Maria A. Diaz-Garcia
Summary: This study assesses the potential of donor-acceptor naphthalimide derivatives for lasing applications, revealing their amplified spontaneous emission properties. To improve photostability, peryleneimide derivatives with more extended pi-conjugation are synthesized and characterized for their optical and ASE properties. Surface emitting thin film organic lasers with polymeric distributed feedback resonators are also fabricated and characterized.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Chemistry, Physical
Yiwen Ji, Xinyu Mu, Hang Yin, Bin Cui, Xiaotao Hao, Kun Gao
Summary: Organic solar cells (OSCs) based on nonfullerene acceptors (NFAs) have achieved rapid development, but the role of donor/acceptor (D/A) interfaces in NFA-based heterosystems has not been fully addressed. In this study, we found that the photoinduced spontaneous charge separation efficiency in typical NFA heterosystems can reach up to 67%, while the contribution of the D/A interface to charge separation efficiency is only 25%. The D/A interface plays a more important role in reducing the charge recombination rate and optimizing the competition between radiative and nonradiative charge recombination to minimize the nonradiative voltage loss.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Materials Science, Multidisciplinary
Eka Cahya Prima, Lydia Helena Wong, Ahmad Ibrahim, Nugraha, Brian Yuliarto
Summary: This study presents a novel achievement of solution processed-pure Cu2ZnSnS4/CdS solar cell by considering the kesterite structure, secondary phases, bandgap, and absorbance. The fabricated solar cell exhibited a power conversion efficiency of 7.5% with a 1.43 eV bandgap and 83.5% external quantum efficiency at 570 nm, highlighting the importance of considering atomic ratios and film uniformity during the spin coating process for high-performance CZTS solar cells.
Article
Energy & Fuels
Na Zhao, Yingrui Sui, Fancong Zeng, Meiling Ma, Tianyue Wang, Zhanwu Wang, Lili Yang, Fengyou Wang, Huilian Liu, Bin Yao
Summary: This study reports on a bismuth (Bi) doping strategy to improve the surface morphology of a solution-processed CZTSSe film, leading to higher efficiency in solar cells. By using a two-step selenization strategy to facilitate Bi-doped CZTSSe phase formation, the crystalline quality of the absorber is improved, carrier mobility is increased, and band tailing is reduced, resulting in a cell efficiency of 6.94%.
SOLAR ENERGY MATERIALS AND SOLAR CELLS
(2022)
Article
Chemistry, Multidisciplinary
Wenbo Lu, Zongbao Li, Mingjie Feng, Hui-Juan Yan, Bin Yan, Liyan Hu, Xing Zhang, Shunchang Liu, Jin-Song Hu, Ding-Jiang Xue
Summary: Elemental selenium has regained attention as a potential photovoltaic material due to its wide bandgap, non-toxic composition, and environmental stability. By modifying its wettability and understanding its air stability mechanism, researchers have successfully fabricated efficient selenium solar cells.
SCIENCE CHINA-CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Dongwook Kim, Hyeonju Lee, Kadir Ejderha, Youngjun Yun, Jin-Hyuk Bae, Jaehoon Park
Summary: This study thoroughly analyzes the density of donor-like state distributions in solution-processed indium-zinc-oxide (IZO) thin-film transistors (TFTs) using photon energy irradiation. Two calculation methods are employed to estimate the density of the donor-like states, revealing a consistent characteristic regardless of the indium concentration. The findings enhance our understanding of the charge-transport mechanisms in IZO semiconductors and provide valuable insight for improving the stability and performance of solution-processed IZO TFTs.
Article
Materials Science, Ceramics
Alfredo Blazquez Martinez, Nicolas Godard, Naveen Aruchamy, Cosme Milesi-Brault, Oana Condurache, Andreja Bencan, Sebastjan Glinsek, Torsten Granzow
Summary: In this study, polycrystalline Mn and Ti co-doped BiFeO3 thin films were fabricated on platinized silicon substrates by a solution deposition method, with PbTiO3 nanocrystals used as a seed layer to induce a preferential (100) pseudocubic orientation. The introduction of a PbTiO3 seed layer significantly reduced the leakage current and resulted in excellent room-temperature ferroelectric properties in the thin films.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2021)
Article
Energy & Fuels
Al Amin, Liping Guo, S. N. Vijayaraghavan, Dian Li, Xiaomeng Duan, Harigovind G. Menon, Jacob Wall, Subhadra Gupta, Mark Ming-Cheng Cheng, Yufeng Zheng, Lin Li, Feng Yan
Summary: In this study, inorganic vanadium oxides were utilized as a hole transport layer to enhance the efficiency and open-circuit voltage of antimony selenide solar cells. The use of VOx resulted in a significant increase in built-in voltage and improved device efficiency from 5.5% to 6.3%.
Article
Chemistry, Physical
Razi Ahmad, Gautam Virender Nutan, Dinesh Singh, Govind Gupta, Udit Soni, Sameer Sapra, Ritu Srivastava
Summary: A strategy was proposed for the synthesis and purification of Cs2AgBiBr6 double perovskite nanocrystals, which remained stable even after washing with a polar solvent. The chemical and colloidal stability of Cs2AgBiBr6 was significantly improved by the efficient colloidal route involving stable precursors. Additionally, a compact and crack-free thin film of Cs2AgBiBr6 nanocrystals was successfully fabricated using a layer-by-layer solid-state ligand exchange technique, and perovskite solar cells were fabricated and tested.
Article
Chemistry, Physical
Nannan Yao, Yuxin Xia, Yanfeng Liu, Shangzhi Chen, Magnus P. Jonsson, Fengling Zhang
Summary: Solution-processed semitransparent organic solar cells (ST-OSCs) are demonstrated using a polymer donor, PM6, and a small molecule acceptor, Y6, to achieve high power conversion efficiency (PCE) and average visible transmittance (AVT). The use of conductive polymer PEDOT:PSS as the top electrode contributes to the high efficiency. The approach of combining a low fraction of visible-wavelength-selective polymer donors with near-infrared nonfullerene acceptors proves to be effective in achieving high PCE and AVT simultaneously, making the ST-OSCs promising candidates for building-integrated photovoltaics.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Environmental Sciences
Bhanu Prakash, Arti Meena, Yogesh Kumar Saini, Sanju Mahich, Amanpal Singh, Sarita Kumari, Chandra Shekhar Pati Tripathi, Banwari Lal Choudhary
Summary: Using ZnTe as the buffer layer in CZTS-based solar cells improves efficiency and offers a non-toxic alternative to conventional Cd-contained buffer layers. CZTS thin films prepared by sol-gel spin coating exhibit good crystallinity. The efficiency of the solar cells is highly influenced by the thickness of the CZTS and ZnTe layers.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Wangying Xu, Chuyu Xu, Liping Hong, Fang Xu, Chun Zhao, Yu Zhang, Ming Fang, Shun Han, Peijiang Cao, Youming Lu, Wenjun Liu, Deliang Zhu
Summary: In this study, we successfully grew ultra-thin In-Yb-O thin films using a vacuum-free aqueous solution method for the first time, and investigated the influence of Yb addition on the properties of In2O3. The results show that Yb dopant effectively suppresses oxygen vacancy defects, leading to improved electrical performance and stability of the thin-film transistors. The eco-friendly ultra-thin In-Yb-O films present a great opportunity for future electronic applications.
Article
Engineering, Electrical & Electronic
Wensi Cai, Haiyun Li, Zhigang Zang
Summary: The study showed that IZO films annealed at 350 degrees Celsius exhibit the best performance, and with the use of a thin AlxOy layer as the gate dielectric, high-performance IZO TFTs were demonstrated. These devices have a high current on/off ratio, high mobility, and are close to the theoretical limit of subthreshold swing.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Polymer Science
Zhengran He, Ziyang Zhang, Kyeiwaa Asare-Yeboah, Sheng Bi, Jihua Chen, Dawen Li
Summary: This study demonstrated the use of a metal-containing semicrystalline polymer as an additive to mediate the thin film morphology of solution-grown, small-molecule organic semiconductors, resulting in improved performance of organic thin film transistors.
Article
Nanoscience & Nanotechnology
Thomas Feeney, Gabriel Aygur, Tony Nguyen, Sidra Farooq, Joao Mendes, Hayden Tuohey, Daniel E. Gomez, Enrico Della Gaspera, Joel van Embden
Summary: Post transition metal chalcohalides are promising semiconductor materials for optoelectronic applications. Bismuth oxyiodide (BiOI) is especially interesting due to its stability, low toxicity, and defect tolerance. In this study, pin-hole free and pure BiOI thin films were successfully fabricated using a solution processed method. All-inorganic solar cells based on these films were also fabricated for the first time, with device improvements rivaling vacuum deposited devices achieved through templating film growth. The BiOI thin films and devices presented here provide an excellent platform for the further development of solution processed bismuth chalcohalide optoelectronic devices.