Improved performance for inverted organic photovoltaics via spacer between benzodithiophene and benzothiazole in polymers

L Mohammad, Q Chen, A Mitul, J Sun… - The Journal of …, 2015 - ACS Publications
In this work, the effects of the spacer between benzo [1, 2-b; 3, 4-b′] dithiophene (BDT) and
dialkoxybenzothiadiazole (ROBT) in polymers were investigated for applications in organic …

High-efficiency organic photovoltaics with two-dimensional conjugated benzodithiophene-based regioregular polymers

H Kim, B Lim, H Heo, G Nam, H Lee, JY Lee… - Chemistry of …, 2017 - ACS Publications
We synthesized and characterized two kinds of regioregular polymers that were based on
thieno [3, 4-b] thiophene as an electron-accepting unit and benzo [1, 2-b: 4, 5-b′] …

Conjugated Polymers Based on Benzo[2,1-b:3,4-b′]dithiophene with Low-Lying Highest Occupied Molecular Orbital Energy Levels for Organic Photovoltaics

S Xiao, AC Stuart, S Liu, W You - ACS Applied Materials & …, 2009 - ACS Publications
Fusing bithiophene units with a benzo moiety, benzo [2, 1-b: 3, 4-b′] dithiophene (BDT),
was projected by theoretical calculations to lower the highest occupied molecular orbital …

Enhancing performance of ternary blend photovoltaics by tuning the side chains of two-dimensional conjugated polymer

CH Chen, YJ Lu, YW Su, YC Lin, HK Lin, HC Chen… - Organic …, 2019 - Elsevier
We prepared the ternary blends active layer by incorporating a new two-dimensional donor-
acceptor (D/A) conjugated polymer (BDTTBO) comprising benzo-dithiophene-thiophene …

Investigations into inward positioned 3, 3′-Dihexylditheinylbenzothiadiazole (DTBTh)-Benzodithiophene (BDT) based polymer solar cells by controlling molecular …

NJ Hong, YS Lee, JH Park, SI Na, JC Choe, K Zong - Organic Electronics, 2017 - Elsevier
In previous studies, PSCs based on polymers with an inward alkyl positioned DTBT unit
showed poor power conversion efficiency mainly due to the greatly distorted polymer …

Enhanced and tunable open-circuit voltage using dialkylthio benzo [1, 2-b: 4, 5-b′] dithiophene in polymer solar cells

D Lee, E Hubijar, GJD Kalaw, JP Ferraris - Chemistry of Materials, 2012 - ACS Publications
In this study, we explore the effect of the dialkoxy and dithioalkoxy side chains on the benzo
[1, 2-b: 4, 5-b′] dithiophene (BDT) unit by comparing the O-BDT homopolymer (O-PBDT), S …

Amorphous Thieno[3,2-b]thiophene and Benzothiadiazole Based Copolymers for Organic Photovoltaics

W Lee, H Cha, YJ Kim, JE Jeong… - … applied materials & …, 2014 - ACS Publications
Three types of amorphous thienothiophene (TT)-benzothiadiazole (BT) based copolymers
(PFTTBT) were synthesized by incorporating alkyl-substituted fluorene moieties as a third …

Effects of alkyl chains of benzothiadiazole-based conjugated polymers on the photovoltaic performance of non-fullerene organic solar cells

C Wang, J Fang, C Guan, Z Hu, T Wu, C Xiao… - Polymer Chemistry, 2023 - pubs.rsc.org
Alkyl chains are commonly used as solubilizer to guarantee the solubility of conjugated
polymers. More importantly, the position, length, and type (linear/branched) of alkyl chains in …

Thiophene spacers impart crystallinity and enhance the efficiency of benzotrithiophene-based conjugated polymers for bulk heterojunction photovoltaics

SC Lan, PA Yang, MJ Zhu, CM Yu, JM Jiang… - Polymer …, 2013 - pubs.rsc.org
In this study we synthesized the donor–acceptor conjugated copolymers PBTT4BT and
PBTT4BO featuring benzotrithiophene (BTT) units as donors and benzothiadiazole (BT) and …

Contrasting Effect of Side‐Chain Placement on Photovoltaic Performance of Binary and Ternary Blend Organic Solar Cells in Benzodithiophene‐Thiazolothiazole …

M Saito, S Ogawa, I Osaka - ChemSusChem, 2021 - Wiley Online Library
Abstract π‐Conjugated polymers are important materials for organic photovoltaics. While
search for new backbone systems is central to the development of π‐conjugated polymers …