Structure–properties of small donor–acceptor molecules for homojunction single-material organic solar cells

Abstract

Homojunction single material organic solar cells (HOSCs) based on small donor-acceptor molecules represent the ultimate stage of simplification of OSCs. While single-material OSCs based on double-cable polymers or fullerene-based dyads...

Main Circuit Topology and Electromagnetic Interference of Electric Vehicle Bidirectional Charger

“…In equations ( 2) and ( 5), the conduction loss resistance values are all from the data sheet and the dead-time loss in equations ( 3) and ( 6) is determined by the dead-time, the conduction voltage drop of the SiC body diode (provided by the data sheet), the current flowing at this moment, and the switching frequency [11]. In order to achieve a system efficiency of 97%, the switching frequency of the DAB part is set to 100 kHz and the switching frequency of the inverter side is set to 50 kHz.…”

Tripodal Triazine and 1,8‐Naphthalimide‐based Small Molecules as Efficient Photocatalysts for Visible‐light Oxidative Condensation

“…[23] 1,8-naphthalimide derivatives have been utilized as light-emitters and as acceptor moieties in dye-sensitized solar cells, [24] OLEDs [4] and photocatalytic transformations [25] owing to their synthetic versatility, excellent chemical stability and tunability of optical properties through a variety of substituents and intramolecular charge transfer interactions. [6,[26][27][28] Triazines are electron deficient in nature and thus are advantageous for electron conduction. [16,17] Triphenyl triazine ring has been substituted with donor chromophores such as phenothiazine, fluorene, [16] carbazole, [8,29,30] thiophene [2,8,31] and aromatic dendrimers consisting of triphenylamine [32,33] to obtain electron D-A molecules and have been widely studied.…”

4,4-Bis(2-ethylhexyl)-6-(9-(2-ethylhexyl)-2,3,4,4a,9,9a-hexahydro-1H-carbazol-6-yl)-4H-cyclopenta[2,1-b:3,4-b′]dithiophene-2-carbaldehyde

“…However, the industrial development of OSCs is constrained by issues of cost, synthesis scalability, and stability of organic dyes [1,9,10]. To solve the problem of reducing the cost of OSC production, the efforts of chemists in recent years have been focused on simplifying the structure of active materials and devices, including single-component organic solar cells (SMOSCs) [11,12]. As a rule, such simple molecules have a donor-π-spacer-acceptor (D-π-A) structure, where the dicyanovinyl group acts as an acceptor [11][12][13][14].…”

“…To solve the problem of reducing the cost of OSC production, the efforts of chemists in recent years have been focused on simplifying the structure of active materials and devices, including single-component organic solar cells (SMOSCs) [11,12]. As a rule, such simple molecules have a donor-π-spacer-acceptor (D-π-A) structure, where the dicyanovinyl group acts as an acceptor [11][12][13][14]. The main method for introducing this group is the Knoevenagel reaction of malononitrile with the corresponding aldehydes.…”