氧气吸附对钙钛矿性质影响的理论研究

来源 :第十三届全国量子化学会议 | 被引量 : 0次 | 上传用户:ly6624
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
  氧分子对钙钛矿的影响在实验中已被广泛研究,但是理论上的机理研究仍比较欠缺。本文尝试通过第一性原理的计算揭示氧分子和钙钛矿作用的微观机理。研究结果表明氧分子是通过范德华力吸附在钙钛矿的表面,这种吸附会使钙钛矿表面产生少量诱导正电荷(相应地,氧分子上产生诱导负电荷)。
其他文献
The switching behavior of butadienimine molecule with two tautomeric forms sandwiched between different graphene nanoribbons(GNRs)electrodes are investigated by applying nonequilibrium Greens function
The frustrated Lewis pairs(FLPs),a kind of novel metal-free catalysts for activating a broad range of small molecules[1-4],are limited in homogeneous molecular-based chemistry and catalysis due to the
Ultraviolet Photoelectron Spectroscopy(UPS)is widely used experimental tools to determine the electronic polarization of organic solids by measuring the difference of the ionization potentials between
The solvated supermolecular approach,i.e.,block-localized wavefunction coupled with polarizable continuum model(BLW/PCM),is proposed to calculate molecular ionization potential(IP),electron affinity(E
二芳基乙烯的光环化反应在分子开关和有机合成领域有重要应用。采用(TD)DFT、CASSCF 和CASPT2 方法对二芳基乙烯类化合物(如图1 所示)的光致关环反应及重排过程进行了研究,以探索羰基官能团及杂原子位置的不同对反应机理的影响。
采用 CASSCF 和CASPT2 方法研究了Criegee 中间体CH2OO 的光化学反应机理。结果发现:CH2OO 受光激发到S2 态后,可发生O-O 键解离过程,并在O-O键断裂前后抵达S2 与S1 态间的交叉点;此时分子既可保持原Cs 对称性发生进一步解离,又可自发地沿C-O 键旋转的方向弛豫到S1 态,并趋向于形成垂直结构。
Using density functional theory(DFT),we have investigated the conversion of propane to propyl trifluoroacetate catalyzed by five kinds of(bis-2BB)PdBr2 complexes(bis-2BB is the derivatives of bis-2-bo
The interactions between ceria nanoparticle(CNP)and water are investigated with density functional theory.Different sets of calculations are performed based on generalized-gradient approximations GGA-
One area of particular importance research in many areas of chemistry and biology science is the study of intermolecular non-covalent interactions.Density functional theory(DFT)methods have been prove
The binding energy of charge-transfer(CT)state at the pi-conjugated donor-acceptor(DA)interaction plays a key role in controlling the efficient of exciton dissociation to form free mobile charge carri