Article
Chemistry, Multidisciplinary
Walter Giurlani, Martina Vizza, Antonio Alessio Leonardi, Maria Jose Lo Faro, Alessia Irrera, Massimo Innocenti
Summary: This work demonstrates the optimal conditions for electrodeposition of a CdSe film on n-Si and studies the structural and optical properties of the films before and after annealing. Significant enhancement of photoluminescence is observed after annealing, opening up possibilities for integrating other materials in silicon manufacturing processes for optoelectronic device fabrication.
Article
Electrochemistry
Ozlem Uguz Neli, Oezlem Budak, Atif Koca
Summary: Cadmium zinc sulfoselenide (CdZnSSe) and reduced graphene oxide-cadmium zinc sulfoselenide (RGO)-CdZnSSe composite-based photoelectrodes were fabricated using a facile, simultaneous co-electrodeposition method for the first time. The rCV technique allowed for homogeneous decoration of CdZnSSe particles among RGO sheets, resulting in improved photoelectrochemical performance in hydrogen evolution. The Cd0.8Zn0.2S0.2Se0.8 photodecoration demonstrated the highest photocurrent density (4.08 mA cm-2), which was further increased to 5.00 mA cm-2 by decorating with RGO. The proposed rCV technique showed superiority in fabricating well-controlled RGO-CdZnSSe composite photoelectrodes.
ELECTROCHIMICA ACTA
(2023)
Article
Chemistry, Physical
Yixuan Ren, Yuqi Li, Wenbo Li, Shuang Zhao, Hao Chen, Xingzhao Liu
Summary: A heterojunction photodetector based on the photogating effect is fabricated by combining the novel topological insulator Bi2Se3 with the traditional narrow-gap PbSe, resulting in high photosensitivity and fast response.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Jing Chen, Yabing Shan, Ping Li, Xiao-Ming Wu, Tian-Ling Ren
Summary: This work presents a photodetector based on 2-D materials with parallel-mode heterojunctions, which demonstrates self-powered multicolor broadband photodetection and high detection performance in UV-Vis and Vis-NIR spectra. The photodetector features a high on/off ratio, low dark current, and short response time, paving the way for high-performance broadband photodetectors based on 2-D materials.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2021)
Article
Chemistry, Analytical
Young-Hoon Lee, Jin Soo Kang, In-Rok Jo, Yung-Eun Sung, Kwang-Soon Ahn
Summary: This study reported the development of a double-layer CoSe2/NiSe2 film as a high-performance electrode material for supercapacitors. The film exhibited a distinctive web-like morphology and large surface area, providing interconnected pathways for charge transport and improved ion-diffusion kinetics. The double-layer CoSe2/NiSe2 electrode showed enhanced performance in supercapacitors compared to single-layer CoSe2 and NiSe2, with high specific capacity, outstanding rate capability, and decent cycling stability.
JOURNAL OF ELECTROANALYTICAL CHEMISTRY
(2021)
Article
Chemistry, Analytical
Rabiaa Elkarous, Afrah Bardaoui, Jerome Borme, Nabil Sghaier, Pedro Alpuim, Diogo M. F. Santos, Radhouane Chtourou
Summary: This study proposes a high-performance asymmetric gold/graphene/platinum photodetector that operates without bias. It incorporates interdigitated metallic contacts to enhance the separation and collection of photocarriers. By utilizing chemical vapor deposition and electron-beam lithography, three devices with different dimensions were fabricated and evaluated for their photoresponsivities at different wavelengths. The 100 μm device exhibited the highest photoresponsivity of 358 A/W at 400 nm illumination. These findings demonstrate the potential of the proposed design to increase the active area, improve light absorption, and achieve efficient separation and collection of photogenerated carriers, making it highly relevant for optoelectronic applications.
Article
Chemistry, Multidisciplinary
Arun Ashokan, Jiho Han, James A. Hutchison, Paul Mulvaney
Summary: We report an unexpected enhancement of photoluminescence (PL) in CdSe-based core/shell nanoplatelets (NPLs) upon electrochemical hole injection. Moderate hole doping densities induce an enhancement of more than 50% in PL intensity, accompanied by a narrowing and blue-shift of the PL spectrum. The hole-induced PL brightening in NPLs contrasts with the typical observation of PL quenching in CdSe-based quantum dots following hole injection. We propose that hole injection removes surface traps responsible for negative trions formation, thereby blocking nonradiative Auger processes. Continuous photoexcitation causes the enhanced PL intensity to decrease back to its initial level, indicating that photocharging is a key step in the loss of PL luminescence during normal aging. Modulation of the potential can be used for reversible enhancement or quenching of PL, enabling electro-optical switching.
Article
Chemistry, Physical
Chandrasekar Perumal Veeramalai, Yang Xu, Yuquan Chen, Guochen Lin, Jing Wang, Yang Wang, Chuanbo Li, Xiaoming Zhang
Summary: With its stable structure, large optical absorption coefficient, optimal bandgap, and high See-Beck coefficient, antimony selenide (Sb2Se3) shows promising applications in solar cells, photodetectors, and thermoelectric devices. This study successfully fabricated high-quality Sb2Se3 nanowires through a hydrothermal method and demonstrated the fabrication of a single nanowire photodetector. The Sb2Se3 nanowires were found to have a bandgap of 1.04 eV, and the single nanowire photodetector exhibited excellent performance with a dark current of 230 pA, a photocurrent of 45 nA, and a photoresponsivity of 196 mA/W under specific light irradiation. The results provide a foundation for the large-scale synthesis of high-purity Sb2Se3 nanowires and their application in optoelectronic devices.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2023)
Review
Materials Science, Multidisciplinary
Laura Piperno, Giuseppe Celentano, Giovanni Sotgiu
Summary: Metal selenide materials, particularly FeSe, have gained attention due to their wide applications as a semiconductor in solar cells and a superconductor with a critical transition temperature of 8 K. The possibility of producing large-area FeSe thin films at a low cost using electrodeposition has been explored, but the reported results are difficult to compare due to variations in the experimental procedures. This review aims to gather information on FeSe electrodeposition, analyze the thermodynamic laws governing the process, highlight differences in experimental procedures, and draw general conclusions on the topic if possible.
Article
Materials Science, Multidisciplinary
Soheil Ghods, Ali Esfandiar, Jun-Hui Choi, Azam Iraji Zad, Mukkath Joseph Josline, Sein Kim, Jae-Hyun Lee
Summary: In this study, high-performance broadband photodetectors based on a mixed-dimensional heterostructure of topological insulator Bi2Se3 nanoparticles with the semiconductor WSe2 were implemented, demonstrating excellent photoresponsivity and fast response time. The enhancement in photoresponsivity, response time, and broadband photoresponse of the Bi2Se3 NPs/WSe2 structure compared to typical semiconductor structures can be attributed to the gapless behavior in surface states of topological insulator materials. Simulations confirmed a significant increase in the interfacial electric field in the Bi2Se3 NPs/WSe2 structure due to the surface states in topological insulator nanoparticles, paving the way for efficient optoelectronic devices based on these materials.
MATERIALS TODAY PHYSICS
(2023)
Article
Chemistry, Multidisciplinary
Sanna Wickerts, Rickard Arvidsson, Bjorn A. Sanden, Gregory Peters, Lili Hou, Bo Albinsson
Summary: The study provides ready-to-use LCA unit process data for four NPs suitable for photon upconversion applications, and conducts an impact assessment. The research investigates whether it is preferable from a climate perspective to install more solar modules or equip existing ones with upconversion devices.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Chemistry, Analytical
Huangling Gu, Long Wang
Summary: Cadmium (Cd) pollution poses a serious threat to food security and human health, and the current soil heavy metal detection methods have accuracy limitations. This study proposes a high-detection-efficiency photodiode that can improve the accuracy of the analyzer and meet the detection requirements for Cd.
Article
Electrochemistry
Nathan Missault, Walther Schwarzacher
Summary: Gold electrodeposition from a thiosulfate solution was used to bridge parallel electrodes with insulator layer thickness, and the observation of conductance quantization phenomena was attributed to the formation of atomic point contacts. Addition of sulfite to the electrolyte resulted in smoother current increases, and nanogap morphology could be controlled by applied bias, with lower bias producing smoother nanogap edges. Electrochemical cycling was shown to be effective in tuning nanogap structure.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2021)
Article
Electrochemistry
Lele Fan, Ziyu Feng, Xinyuan Zhu, Yue Wei, Qinfang Zhang, Yuebin Cao, Lei Zhu
Summary: In this work, a facile electrodeposition method was used to prepare vanadium selenide cathodes for asymmetric hybrid supercapacitors. Nanosphere-like vanadium selenide cathode or microrod-like selenium were achieved by controlling the deposition technique. The prepared vanadium selenide cathode exhibited high capacitance feature and a hybrid capacitor behavior, and the assembled hybrid supercapacitor showed excellent rate performance and good cycling stability. Density functional theory calculations also demonstrated the appropriate adsorption energy and low ion diffusion barrier of the electrode material.
ELECTROCHIMICA ACTA
(2023)
Article
Materials Science, Multidisciplinary
Komal Patil, Pravin Babar, Xue Li, Jun Sung Jang, Dongmyeong Kim, Myeong Cheol Baek, Pravin Bhoite, Jin Hyeok Kim
Summary: In this study, amorphous NiMoSe nanospheres were synthesized on Ni foam via electrodeposition, showing outstanding catalytic activity for the hydrogen evolution reaction with low overpotential and small Tafel slope, as well as long-term durability.
Review
Chemistry, Analytical
Girija Thesma Chandran, Xiaowei Li, Alana Ogata, Reginald M. Penner
ANALYTICAL CHEMISTRY
(2017)
Article
Chemistry, Physical
Timothy S. Plett, Wenjia Cai, Mya Le Thai, Ivan V. Vlassiouk, Reginald M. Penner, Zuzanna S. Siwy
JOURNAL OF PHYSICAL CHEMISTRY C
(2017)
Article
Chemistry, Multidisciplinary
Girija Thesma Chandran, Gaurav Jha, Shaopeng Qiao, Mya Le Thai, Rajen Dutta, Alana F. Ogata, Ji-Soo Jang, Il-Doo Kim, Reginald M. Penner
Article
Chemistry, Multidisciplinary
Timothy Plett, Mya Le Thai, Josslyn Cai, Ivan Vlassiouk, Reginald M. Penner, Zuzanna S. Siwy
Article
Chemistry, Physical
Mya Le Thai, Shaopeng Qao, Rajen K. Dutta, Gaurav Jha, Alana F. Ogata, Girija Thesma Chandran, Reginald M. Penner
ACS ENERGY LETTERS
(2017)
Article
Chemistry, Multidisciplinary
Xiaowei Li, Mya Le Thai, Rajen K. Dutta, Shaopeng Qiao, Girija T. Chandran, Reginald M. Penner
Article
Nanoscience & Nanotechnology
Won-Tae Koo, Ji-Soo Jang, Shaopeng Qao, Wontae Hwang, Gaurav Jha, Reginald M. Penner, Il-Doo Kim
ACS APPLIED MATERIALS & INTERFACES
(2018)
Biographical-Item
Chemistry, Multidisciplinary
Wolfgang J. Parak, Warren W. C. Chan, Manish Chhowalla, Omid Farokhzad, Sharon Glotzer, Yury Gogotsi, Paula T. Hammond, Mark C. Hersam, Ali Javey, Cherie R. Kagan, Kazunori Kataoka, Ali Khademhosseini, Nicholas A. Kotov, Shuit-Tong Lee, Young Hee Lee, Yan Li, Jill Millstone, Paul A. A. Mulvaney, Andre E. Nel, Peter J. Nordlander, Reginald M. Penner, Andrey L. Rogach, Raymond E. Schaak, Molly M. Stevens, Andrew T. S. Wee, C. Grant Willson, Paul S. Weiss
Editorial Material
Chemistry, Multidisciplinary
Yury Gogotsi, Reginald M. Penner
Article
Chemistry, Multidisciplinary
Apurva Bhasin, Alana F. Ogata, Jeffrey S. Briggs, Phillip Y. Tam, Ming X. Tan, Gregory A. Weiss, Reginald M. Penner
Article
Nanoscience & Nanotechnology
Ji-Soo Jang, Shaopeng Qiao, Seon-Jin Cho, Gaurav Jha, Alana F. Ogata, Won-Tae Koo, Dong-Ha Kim, Il-Doo Kim, Reginald M. Penner
ACS APPLIED MATERIALS & INTERFACES
(2017)
Review
Chemistry, Multidisciplinary
Reginald M. Penner
ACCOUNTS OF CHEMICAL RESEARCH
(2017)
Article
Chemistry, Multidisciplinary
Won-Tae Koo, Shaopeng Qiao, Alana F. Ogata, Gaurav Jha, Ji-Soo Jang, Vivian T. Chen, Il-Doo Kim, Reginald M. Penner
Article
Chemistry, Multidisciplinary
Beatriz Pelaz, Christoph Alexiou, Ramon A. Alvarez -Puebla, Frauke Alves, Anne M. Andrews, Sumaira Ashraf, Lajos P. Balogh, Laura Ballerini, Alessandra Bestetti, Cornelia Brendel, Susanna Bosi, Monica Carril, Warren C. W. Chan, Chunying Chen, Xiaodong Chen, Xiaoyuan Chen, Zhen Cheng, Daxiang Cui, Jianzhong Du, Christian Dullin, Alberto Escudero, Neus Feliu, Mingyuan Gao, Michael George, Yury Gogotsi, Arnold Grunweller, Zhongwei Gu, Naomi J. Halas, Norbert Hampp, Roland K. Hartmann, Mark C. Hersam, Patrick Hunziker, Ji Jian, Xingyu Jiang, Philipp Jungebluth, Pranav Kadhiresan, Kazunori Kataoka, Ali Khademhosseini, Jindirich Kopecek, Nicholas A. Kotov, Harald F. Krug, Dong Soo Lee, Claus-Michael Lehr, Kam W. Leong, Xing-Jie Liang, Mei Ling Lim, Luis M. Liz-Marzan, Xiaowei Ma, Paolo Macchiarini, Huan Meng, Helmuth Mohwald, Paul Mulvaney, Andre E. Nel, Shuming Nie, Peter Nordlander, Teruo Okano, Jose Oliveira, Tai Hyun Park, Reginald M. Penner, Maurizio Prato, Victor Puntes, Vincent M. Rotello, Amila Samarakoon, Raymond E. Schaak, Youqing Shen, Sebastian Sjoqvist, Andre G. Skirtach, Mahmoud G. Soliman, Molly M. Stevens, Hsing-Wen Sung, Ben Zhong Tang, Rainer Tietze, Buddhisha N. Udugama, J. Scott VanEpps, Tanja Weil, Paul S. Weiss, Itamar Willner, Yuzhou Wu, Lily Yang, Zhao Yue, Qian Zhang, Qiang Zhang, Xian-En Zhang, Yuliang Zhao, Xin Zhou, Wolfgang J. Parak
Article
Chemistry, Analytical
Alana F. Ogata, Joshua M. Edgar, Sudipta Majumdar, Jeffrey S. Briggs, Shae V. Patterson, Ming X. Tan, Stephan T. Kudlacek, Christine A. Schneider, Gregory A. Weiss, Reginald M. Penner
ANALYTICAL CHEMISTRY
(2017)
