Self-assembly of SnO2 quantum dots into hierarchically ordered structures assisted by oriented attachment.
نویسندگان
چکیده
Taking SnO2 quantum dots with random orientation as a precursor, NaOH induces self-assembly of SnO2 dots to form the nanowires, side-by-side attachment of which generates hierarchically ordered structures. The multistep oriented attachment mechanism can help to describe the oriented assembly of big nanocrystals.
منابع مشابه
Electric Field Assisted Assembly of Functionalized Quantum Dots into Multiple Layer Thin Films
A CMOS electronic microarray device was used to carry out assisted self-assembly of quantum dots into multilayer structures. CMOS electronic microarrays produce reconfigurable DC electric fields that allow DNA, proteins and other charged molecules to be rapidly transported from the bulk solution and addressed to any activated site on the array surface. Such a device was now used to carry out ra...
متن کاملSelf-assembly of Pbs Quantum Dots in Ordered Superstructures
NIR-emitting colloidal quantum dots (QDs) attract much attention due to their unique properties in order to utilize in diverse areas of applications: from bio-sensing to solar cells fabrication. The self-assembly of QDs in a periodically ordered superstructures, such as superlattices and supercrystals, enables a formation of a new class of functional materials with remarkable optical, electroni...
متن کاملCdS/CdSe Co-sensitized Solar Cells Based on Hierarchically Structured SnO2/TiO2 Hybrid Films
SnO2 nanosheet-structured films were prepared on a fluorine-doped tin oxide (FTO) substrate using ZnO nanosheet as template. The as-prepared SnO2 nanosheets contained plenty of nano-voids and were generally vertical to the substrate. TiO2 nanoparticles were homogeneously deposited into the intervals between the SnO2 nanosheets to prepare a hierarchically structured SnO2/TiO2 hybrid film. The hy...
متن کاملUltrathin SnO2 nanosheets: Oriented attachment mechanism, nonstoichiometric
We successfully synthesized large-scale and highly pure ultrathin SnO2 nanosheets (NSs), with a minimum thickness in the regime of ca. 2.1 nm as determined by HRTEM and in good agreement with XRD refinements and AFM height profiles. Through TEM and HRTEM observations on time-dependent samples, we found that the asprepared SnO2 NSs were assembled by “oriented attachment” of preformed SnO2 nanopa...
متن کاملHierarchically ordered structures enabled by controlled evaporative self-assembly.
Hierarchical structures are common in both nature and technology. In the latter context, controlling the spatial arrangement of components over multiple length scales (i.e., forming hierarchically ordered structures) is highly desirable for many applications, such as lab-on-a-chip devices, integrated circuits, and microelectromechanical systems (MEMSs). [ 1 ] Most hierarchically ordered structu...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Physical chemistry chemical physics : PCCP
دوره 17 7 شماره
صفحات -
تاریخ انتشار 2015