Photoconductors require high charge-carrier mobilities, sensitivity over a wide range of light levels, and good stability. Combining an organic semiconductor with environmentally benign inorganic nanoparticles is a rational means to develop photoconductors with such properties. However, an inhomogeneous distribution of nanoparticles in the active layer restricts both charge-carrier mobility and charge collection at an electrode. In this paper, ultrathin ZnO superstructured nanosheets are successfully synthesized by a solvothermal method. Time-dependent investigations show that the superstructured nanosheets assemble in solution during the growth process. Given that high-quality ZnO nanosheets are obtained, a hybrid photoconductor device with P3HT is fabricated and investigated. Sensitivity above 200% under simulated sunlight is obtained with good air stability. This study demonstrates a general approach to design photoconductors using hybrid nanomaterials.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1002/smll.201101732 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
High-Temperature-Mediated Assembly of Polyoxometalate-Induced Ordered Carbonaceous Superstructures.
Angew Chem Int Ed Engl
December 2024
Advanced Materials and Catalysis Group, ZJU-Zhejiang Xinhua Low-Carbon Research Center, State Key Laboratory of Clean Energy Utilization, Institute of Catalysis, Department of Chemistry, Zhejiang University, Hangzhou, 310058, P. R. China.
Constructing hierarchical superstructures through one-step bottom-up synthesis poses significant challenges due to strong interactions between additives and micelles, which hinders the formation of heterogeneous configurations. Here, we propose a high-temperature-mediated method to weaken these interactions and manipulate the thermal instability of micellar templates. This approach successfully synthesizes hierarchical superstructures that combine a carbonaceous nanosheet substrate with polyoxometalate (POM)-induced, highly ordered discontinuous nanodots in a single preparation step.
View Article and Find Full Text PDFThe photocatalytic reduction of CO into valuable chemicals and fuels is considered a promising solution to address the energy crisis and environmental challenges. In this work, we introduce a Co-ZIL-L mediated etching and integration process to prepare NiCo-OH with an ultrathin nanosheet-assembled 2D leaf-like superstructure (NiCo-OH UNLS). The resulting catalyst demonstrates excellent photocatalytic performance for CO reduction, achieving a CO evolution rate as high as 309.
View Article and Find Full Text PDFEfficient Photocatalytic Hydrogen Production Using In-Situ Polymerized Gold Nanocluster Assemblies.
Small
January 2025
Materials Chemistry Department, CSIR-Institute of Minerals and Materials Technology, Acharya Vihar, Bhubaneswar, 751013, India.
Article Synopsis
- * The study introduces a new photocatalyst design using in situ dopamine polymerization to create gold superclusters (AuSCs) that enhance hydrogen generation by minimizing electron recombination.
- * The resulting AuSCs@PDA structure outperforms others with the highest hydrogen evolution rate of 3.20 mmol g h, demonstrating significant improvements in photocurrent density, stability, and charge transfer efficiency.
Cluster-Cation Pairs Mediated Assembly of Subnanometer Polyoxometalates Superstructures.
J Am Chem Soc
October 2024
Engineering Research Center of Advanced Rare Earth Materials, Department of Chemistry, Tsinghua University, Beijing 100084, China.
Superstructures assembled by subnanometer polyoxometalate (POM) clusters are interesting for their attractive structures and excellent properties. However, the complex interactions between clusters and cations make it challenging to control the assembly of POM clusters at the subnanometer scale. Here, 20 cluster-assembled superstructures built by two types of MPWO (M = La-Lu) clusters are successfully synthesized.
View Article and Find Full Text PDFMaking 2D Materials Sparkle in Energy Storage via Assembly.
Acc Chem Res
September 2024
Nanoyang Group, Tianjin Key Laboratory of Advanced Carbon and Electrochemical Energy Storage, School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China.
Article Synopsis
- Two-dimensional materials like graphene and MXenes show promise for electrochemical energy storage due to their large surface areas and unique properties, but creating a porous conductive network for effective energy storage remains a challenge.
- The need for thicker and denser electrodes for advanced devices and electric vehicles complicates matters, as traditional methods often sacrifice either capacitance or ion-accessibility.
- This text discusses how 2D materials can be organized into complex structures like fibers and porous networks to enhance performance, focusing on the roles of surface chemistry and microstructure formation in optimizing energy storage.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!