当前位置:网站首页>[Chongqing Guangdong education] organic electronics (Bilingual) reference materials of Nanjing University of Posts and Telecommunications
[Chongqing Guangdong education] organic electronics (Bilingual) reference materials of Nanjing University of Posts and Telecommunications
2022-07-07 08:34:00 【yuyueshool】
education
- Organic electronics ( Bilingual )- Chapter materials, examination materials - Nanjing University of Posts and telecommunications 【】
Quiz-I
1、【 Judgment questions 】Organic molecule can contain metal atom.
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】There are some differences in opto-electronics processes between organic and inorganic materials.
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】There is only one kind of exciton.
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】All organic materials have small conductivity, i.e., they are insulators.
A、 correct
B、 error
Reference material 【 】
5、【 Judgment questions 】Conventional electronics is based on inorganic semiconductors.
A、 correct
B、 error
Reference material 【 】
6、【 Judgment questions 】In organic materials there are no covalent bondings.
A、 correct
B、 error
Reference material 【 】
7、【 Judgment questions 】Compared to covalent bonding forces in inorganic semiconductors, the van de Waals forces in organic materials are nearly ten times smaller.
A、 correct
B、 error
Reference material 【 】
8、【 Judgment questions 】Conjugation is an essential structure in photoelectronically active organic materials.
A、 correct
B、 error
Reference material 【 】
9、【 Judgment questions 】Excitons in organic materials are Wannier type with long radius.
A、 correct
B、 error
Reference material 【 】
10、【 Judgment questions 】The transport mode of carrier in organic materials is mainly hopping with low mobility.
A、 correct
B、 error
Reference material 【 】
Quiz-II
1、【 Judgment questions 】Conjugation size of organic molecular partially determined the carrier transportation property.
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】Covalent bonding can also exist in inorganic materials.
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】σ electron can easily delocalize.
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】An ionic crystal consists of cations and anions, therefore, the ionic crystal can conduct electricity.
A、 correct
B、 error
Reference material 【 】
5、【 Judgment questions 】If there is only one covalent bond between two atoms, it is σ bond.
A、 correct
B、 error
Reference material 【 】
6、【 Judgment questions 】Hydrogen bonding belongs to permanent dipole-dipole interaction, it is one of the van der Waals interaction
A、 correct
B、 error
Reference material 【 】
7、【 Judgment questions 】Stable molecular stacking requires minimized lattice energy
A、 correct
B、 error
Reference material 【 】
8、【 Judgment questions 】Compared to Debye force, London force is more polarisability-dependent
A、 correct
B、 error
Reference material 【 】
9、【 Judgment questions 】Atomic orbital describes orbital energy only.
A、 correct
B、 error
Reference material 【 】
10、【 Judgment questions 】Generally, π electron shows higher energy than that of σ electron, so π* electron also shows higher energy than that of σ* electron.
A、 correct
B、 error
Reference material 【 】
Q3
1、【 Judgment questions 】HOMO and LUMO concept can be used for all isolated organic or inorganic molecules.
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】Ionization potential determines the ability of hole injection to a molecule.
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】Electron affinity is the ability of molecule to attract electron.
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】Metal work function is different with Fermi level in number.
A、 correct
B、 error
Reference material 【 】
5、【 Judgment questions 】Conduction band is fully filled with electrons.
A、 correct
B、 error
Reference material 【 】
Quiz-IV
1、【 Judgment questions 】Hydrogen bonding belongs to permanent dipole-dipole interaction, it is one of the van der Waals interaction.
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】Stable molecular stacking requires minimized lattice energy.
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】Compared to Debye force, London force is more polarisability-dependent.
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】Organic solids are all in amorphous state.
A、 correct
B、 error
Reference material 【 】
5、【 Judgment questions 】All organic molecules have permanent dipole.
A、 correct
B、 error
Reference material 【 】
Quiz-V
1、【 Judgment questions 】In triplet state, the spin directions of the two unpaired electrons are opposite
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】In the ground state of organic molecules, electrons are generally paired, and the total spin number is zero
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】Non-radiative decay processes refer to the electron transition from higher energy level to lower energy level without light emission
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】In an excited organic molecule, the nonradiative decay processes always exist
A、 correct
B、 error
Reference material 【 】
5、【 Judgment questions 】An internal conversion process can not occur between two different electronic levels
A、 correct
B、 error
Reference material 【 】
6、【 Judgment questions 】The rate of internal conversion is faster than the radiative decay process
A、 correct
B、 error
Reference material 【 】
7、【 Judgment questions 】Internal conversion can occur within the same electronic level, as well as different electronic levels
A、 correct
B、 error
Reference material 【 】
8、【 Judgment questions 】Generally, inter system crossing (ISC) is forbidden, spin-orbital coupling can release the forbidden feature
A、 correct
B、 error
Reference material 【 】
9、【 Judgment questions 】Spin-orbital coupling renders triplet state lost its feature and exhibiting some singlet characteristic, which can promote inter system crossing (ISC) and phosphorescent emission
A、 correct
B、 error
Reference material 【 】
10、【 Judgment questions 】Compared to pure organic materials, metal complexes generally exhibit more strong spin-orbital coupling, as well as more strong phosphorescence
A、 correct
B、 error
Reference material 【 】
Quiz-VI
1、【 Judgment questions 】The Franck-Condon factor is related to the equilibrium position of the two vibrational stats. The larger the value, the more the overlap, and the stronger the transition.
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】Franck-Condon shift is a Stokes shift caused by molecular conformation shift
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】According to Franck-Condon principle, and if the environmental influence to the two states is small, the absorption and the emission spectra will be mirror symmetry
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】In spectra of optical absorption or emission, the rotational energy some time is observable as fine structure
A、 correct
B、 error
Reference material 【 】
5、【 Judgment questions 】Dipole allowed optical transition occurs between two electronic state with same symmetry
A、 correct
B、 error
Reference material 【 】
Quiz-VII
1、【 Judgment questions 】Compared to monomer emission, the excimer emission is redshift, structureless, but short lifetime.
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】There is no ground state for excimer, but exists ground state for exciplex.
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】Electric field generally assists the dissociation of exciplex.
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】Excimer is formed by two different molecules
A、 correct
B、 error
Reference material 【 】
5、【 Judgment questions 】Dimer is formed by two same molecules
A、 correct
B、 error
Reference material 【 】
6、【 Judgment questions 】Compared to photoluminescence from dilute solution of a pure organic material, the photoluminescence from the solid state of this pure material decreases dramatically with very large redshift. This is due to exciplex formation.
A、 correct
B、 error
Reference material 【 】
Quiz-VIII
1、【 Judgment questions 】Under optical excitation only singlet exciton exists.
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】Dexter energy transfer is a resonance energy transfer by dipole interaction between the donor molecule and the acceptor molecule.
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】Frenkel exciton has the smallest radius.
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】Wannier exciton is generally found in inorganic semiconductors.
A、 correct
B、 error
Reference material 【 】
Quiz-IX
1、【 Judgment questions 】When we say that anthracene is a photoconductor, it means that the conductivity of this material is higher at irradiation with energy larger than its bandgap, compared to dark current.
A、 correct
B、 error
Reference material 【 】
2、【 Judgment questions 】To evaluate the conductivity of a material, the only micro factor is carrier mobility.
A、 correct
B、 error
Reference material 【 】
3、【 Judgment questions 】Both producing external photoelectric effect and photoluminescence need light irradiation. And the light energy is much higher in the latter case.
A、 correct
B、 error
Reference material 【 】
4、【 Judgment questions 】Organic material system can be conductor, semiconductor, insulator, even superconductor.
A、 correct
B、 error
Reference material 【 】
5、【 Judgment questions 】Generally speaking in an organic material, the average energy of a hole is approximately equal to the energy of HOMO electron
A、 correct
B、 error
Reference material 【 】
6、【 Judgment questions 】When dopant with valence electrons less than those in the host semiconductor is introduced, the resulting doped system is n-type semiconductor.
A、 correct
B、 error
Reference material 【 】
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