Hole (donor) and electron (acceptor) transporting organic semiconductors for bulk-heterojunction solar cells

J Chen, Y Chen, LW Feng, C Gu, G Li, N Su, G Wang… - EnergyChem, 2020 - Elsevier
The field of bulk heterojunction (BHJ) organic photovoltaics (OPVs) or solar cells (OSCs) has
experienced a dramatic advance toward a competitive technology reflecting the introduction …

Mechanically robust all-polymer solar cells from narrow band gap acceptors with hetero-bridging atoms

Q Fan, W Su, S Chen, W Kim, X Chen, B Lee, T Liu… - Joule, 2020 - cell.com
We developed three narrow band-gap polymer acceptors PF2-DTC, PF2-DTSi, and PF2-
DTGe with different bridging atoms (ie, C, Si, and Ge). Studies found that such different …

A narrow‐bandgap n‐type polymer with an acceptor–acceptor backbone enabling efficient all‐polymer solar cells

H Sun, H Yu, Y Shi, J Yu, Z Peng, X Zhang… - Advanced …, 2020 - Wiley Online Library
Narrow‐bandgap polymer semiconductors are essential for advancing the development of
organic solar cells. Here, a new narrow‐bandgap polymer acceptor L14, featuring an …

Processing strategies for an organic photovoltaic module with over 10% efficiency

CY Liao, Y Chen, CC Lee, G Wang, NW Teng, CH Lee… - Joule, 2020 - cell.com
A series of readily accessible and scalable benzo [1, 2-b: 4, 5-b′] dithiophene (BDT)-2, 5-
dithienyl-thieno [3, 4-c] pyrrole-4, 6-dione (TPD-T2)-based donor polymers are utilized in …

Trifluoromethylation enables a 3D interpenetrated low-band-gap acceptor for efficient organic solar cells

H Lai, Q Zhao, Z Chen, H Chen, P Chao, Y Zhu, Y Lang… - Joule, 2020 - cell.com
Trifluoromethylation has been used for nonfullerene acceptors, resulting in an ultra-narrow
band-gap molecule named BTIC-CF 3-γ. Compared to its fluorinated and chlorinated …

Ethylene glycol-based side chain length engineering in polythiophenes and its impact on organic electrochemical transistor performance

M Moser, LR Savagian, A Savva, M Matta… - Chemistry of …, 2020 - ACS Publications
Replacing the alkyl side chains on conventional semiconducting polymers with ethylene
glycol (EG)-based chains is a successful strategy in the molecular design of mixed …

Organoboron polymer for 10% efficiency all-polymer solar cells

R Zhao, N Wang, Y Yu, J Liu - Chemistry of Materials, 2020 - ACS Publications
Optoelectronic polymers are always π-conjugated polymers consisting of C, H, N, S, and O
elements. The main group element chemistry is a new tool to tune the optoelectronic …

High‐performance all‐polymer solar cells enabled by n‐type polymers with an ultranarrow bandgap down to 1.28 eV

K Feng, J Huang, X Zhang, Z Wu, S Shi… - Advanced …, 2020 - Wiley Online Library
Compared to organic solar cells based on narrow‐bandgap nonfullerene small‐molecule
acceptors, the performance of all‐polymer solar cells (all‐PSCs) lags much behind due to …

Fluorinating π‐extended molecular acceptors yields highly connected crystal structures and low reorganization energies for efficient solar cells

SM Swick, JM Alzola, VK Sangwan… - Advanced Energy …, 2020 - Wiley Online Library
The synthesis and characterization of new semiconducting materials is essential for
develo** high‐efficiency organic solar cells. Here, the synthesis, physiochemical …

To Fluorinate or Not to Fluorinate in Organic Solar Cells: Achieving a Higher PCE of 15.2% when the Donor Polymer is Halogen‐Free

J Wu, CY Liao, Y Chen, RM Jacobberger… - Advanced Energy …, 2021 - Wiley Online Library
Fluorination of the donor and/or acceptor blocks of photoactive semiconducting polymers is
a leading strategy to enhance organic solar cell (OSC) performance. Here, the effects are …