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Organic solar cells (OSCs) have attracted significant interest from researchers due to their low cost, high-power conversion efficiency (PCE), and ability to compensate for light deficits. Four new acceptor molecules (CC1–CC4) have been designed. Several parameters have been studied including frontier molecular orbital (FMO), density of states (DOS), transition density matrix (TDM), reorganizational energies of electrons and holes, open circuit voltage ($V_{\text{o}\text{c}})$, and charge transfer analysis. The designed molecules (CC1–CC4) show promising optoelectronic features, with a narrower energy gap (0.320–1.922 eV) and absorption properties demonstrating that designed molecules exhibit ${\lambda }_{\text{m}\text{a}\text{x}}$ (560–698 nm). Excitation energy values range from 1.776 eV to 2.216 eV, which is lower for all of the developed compounds. This study will help researchers to design molecules for the development of efficient OSCs.

The binding energy of a shallow acceptor in an isolated quantum well of the CdTe/Cd_1-xMn_xTe system has been investigated in an external magnetic field, assuming an empirical relationship between the barrier height and the magnetic field. Photoionization cross-sections for different magnetic fields have been estimated. Taking into account the confined phonons in the electron-phonon interaction, carrier capture times for various magnetic fields and different hydrostatic pressures have been computed. The results obtained are discussed in the light of the existing literature.

Zn-doped p-type InP has been examined by far-infrared absorption magnetospectroscopy to fields much higher than previously. The impurity-related transitions observed confirm and greatly extend previous data and reveal new phenomena.

The mechanism and properties of electron transfer along protein molecules at finite temperature T ≠ 0 in the life systems are studied using nonlinear theory of bio-energy transport and Green function method, in which the electrons are transferred from donors to acceptors in virtue of the supersound soliton excited by the energy released in ATP hydrolysis. The electron transfer is, in essence, a process of oxidation–reduction reaction. In this study we first give the Hamiltonian and wavefunction of the system and find out the soliton solution of the dynamical equation in the protein molecules with finite temperature, and obtain the dynamical coefficient of the electron transfer. The results show that the speed of the electron transfer is related to the velocity of motion of the soliton, distribution of electrons in the donor and acceptor as well as the interaction strength among them. We finally concluded the changed rule of electric current, arising from the electron transfer, with increasing time. These results are useful in molecular and chemical biology.

The binding energies of shallow acceptors in Cd_1-xinMn_xinTe/ Cd_1-xoutMn_xoutTe quantum dots are calculated in the presence of external magnetic fields. Variational calculations are performed within effective mass approximation. The results show that the impurity binding energy (i) increases with the reduction in dot sizes, (ii) decreases with the magnetic field is increased for a given dot, and (iii) reaches a peak value as the dot radius decreases and then diminishes to a limiting value corresponding to the radius for which there are no bound states in the quantum dot. Spin polaronic shifts are estimated with the acceptor envelope function using a mean field theory. These results are compared with the existing literatures.

The interaction of meso-tetraarylporphyrins, H₂T(4-X)PP, with sulfur trioxide pyridine complex (SO₃.py) in chloroform only produced 1:2 molecular complexes, [H₂T(4-X)PP(SO₃)₂]. UV-vis, ¹H NMR, and FT-IR spectra, as well as elemental analysis, suggested pseudo tetrahedrally distorted porphyrin core structures with σ-bonding from two pyrrolenine nitrogen donors to the d orbital of sulfur in two SO₃s and the occurrence of two hydrogen bonds between two pyrrolic NH and oxygens of sulfur trioxides from above and below the mean plane of the porphyrins.

The easily accessible 2,17-bis-chlorosulfonated 5,10,15-trispentafluorophenylcorrole is demonstrated as a highly versatile synthon for the preparation of corroles with functional groups that may be used for advanced applications and materials. Examples presented here are useful for donor-acceptor dyads, water-solubility inducing carbohydrates, chirality-inducing sugars and amino acids, and biotin-avidin technology.

We report a thorough investigation of triplet–triplet annihilation upconversion (TTA-UC) in the silicone core/silica shell hollow nanoparticles (SSNPs). The results demonstrate that Platinum(II) octaethylporphyrin (PtOEP) and 9, 10-diphenylanthracene (DPA) were successfully captured in the hollow particles. It was also observed that TTA upconversion intensity from SSNPs increases with the concentration of DPA increasing. The mobility of chromophores was improved by the liquid core of the SSNPs, leading to the increasing of TTA-UC intensity. These results shed light onto the strategies to construct TTA-UC systems in solid substrates.

Zn-doped p-type InP has been examined by far-infrared absorption magnetospectroscopy to fields much higher than previously. The impurity-related transitions observed confirm and greatly extend previous data and reveal new phenomena.