Small Molecules Based on Thieno[3,4-c]pyrrole-4,6-dione for High Open-Circuit Voltage (VOC) Organic Photovoltaics: Effect of Different Positions of Alkyl Substitution on Molecular Packing and Photovoltaic Performance

2014 ◽  
Vol 6 (22) ◽  
pp. 20035-20042 ◽  
Author(s):  
Yoon Suk Choi ◽  
Tae Joo Shin ◽  
Won Ho Jo
Keyword(s):  
Small Molecules ◽  
Organic Photovoltaics ◽  
Open Circuit Voltage ◽  
Photovoltaic Performance ◽  
Open Circuit ◽  
Molecular Packing ◽  
Alkyl Substitution

Novel solution-processible small molecules based on benzo[1,2-b:3,4-b′:5,6-b′′]trithiophene for effective organic photovoltaics with high open-circuit voltage

RSC Advances ◽  
2015 ◽  
Vol 5 (19) ◽  
pp. 14540-14546 ◽  
Author(s):  
Lucheng Meng ◽  
Fen Wu ◽  
Hailu Liu ◽  
Bin Zhao ◽  
Jian Zhang ◽  
...  
Keyword(s):  
Small Molecules ◽  
Organic Photovoltaics ◽  
Open Circuit Voltage ◽  
Open Circuit

Two novel A–D–A small molecules D1 and D2, containing benzo[1,2-b:3,4-b′:5,6-b′′]trithiophene as the central electron-donating unit and two thiophenes or three thiophenes as conjugated π-bridges, were designed and synthesized.

scholarly journals Direct AFM-based nanoscale mapping and tomography of open-circuit voltages for photovoltaics

2018 ◽  
Vol 9 ◽  
pp. 1802-1808 ◽  
Author(s):  
Katherine Atamanuk ◽  
Justin Luria ◽  
Bryan D Huey
Keyword(s):  
Solar Cells ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Photovoltaic Performance ◽  
Three Dimensional ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Photovoltaic Properties ◽  
Order Of Magnitude ◽  
Individual Grains

The nanoscale optoelectronic properties of materials can be especially important for polycrystalline photovoltaics including many sensor and solar cell designs. For thin film solar cells such as CdTe, the open-circuit voltage and short-circuit current are especially critical performance indicators, often varying between and even within individual grains. A new method for directly mapping the open-circuit voltage leverages photo-conducting AFM, along with an additional proportional-integral-derivative feedback loop configured to maintain open-circuit conditions while scanning. Alternating with short-circuit current mapping efficiently provides complementary insight into the highly microstructurally sensitive local and ensemble photovoltaic performance. Furthermore, direct open-circuit voltage mapping is compatible with tomographic AFM, which additionally leverages gradual nanoscale milling by the AFM probe essentially for serial sectioning. The two-dimensional and three-dimensional results for CdTe solar cells during in situ illumination reveal local to mesoscale contributions to PV performance based on the order of magnitude variations in photovoltaic properties with distinct grains, at grain boundaries, and for sub-granular planar defects.

Symmetry-Breaking Charge Transfer in a Zinc Chlorodipyrrin Acceptor for High Open Circuit Voltage Organic Photovoltaics

2015 ◽  
Vol 137 (16) ◽  
pp. 5397-5405 ◽  
Author(s):  
Andrew N. Bartynski ◽  
Mark Gruber ◽  
Saptaparna Das ◽  
Sylvie Rangan ◽  
Sonya Mollinger ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Symmetry Breaking ◽  
Organic Photovoltaics ◽  
Open Circuit Voltage ◽  
Open Circuit

Carbazole-based small molecules for vacuum-deposited organic photovoltaic devices with open-circuit voltage exceeding 1 V

2017 ◽  
Vol 47 ◽  
pp. 162-173 ◽  
Author(s):  
Yuan Jay Chang ◽  
Jung-Lien Hsu ◽  
Yi-Hua Li ◽  
Sajal Biring ◽  
Tzu-Hung Yeh ◽  
...  
Keyword(s):  
Small Molecules ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Organic Photovoltaic ◽  
Photovoltaic Devices ◽  
Organic Photovoltaic Devices

Defect passivation by alcohol-soluble small molecules for efficient p–i–n planar perovskite solar cells with high open-circuit voltage

2019 ◽  
Vol 7 (37) ◽  
pp. 21140-21148 ◽  
Author(s):  
Kang Chen ◽  
Jingnan Wu ◽  
Yanan Wang ◽  
Qing Guo ◽  
Qiaoyun Chen ◽  
...  
Keyword(s):  
Solar Cells ◽  
Small Molecules ◽  
Small Molecule ◽  
Open Circuit Voltage ◽  
Perovskite Solar Cells ◽  
Open Circuit ◽  
Defect Passivation

A π-conjugated and alcohol-soluble small molecule was used to passivate defects in p–i–n Pero-SCs with a PCE of 21.40% and Voc of 1.19 V.

Terminal alkyl substitution in an A–D–A-type nonfullerene acceptor: simultaneous improvements in the open-circuit voltage and short-circuit current for efficient indoor power generation

2020 ◽  
Vol 8 (45) ◽  
pp. 23894-23905
Author(s):  
Hwa Sook Ryu ◽  
Hyun Gyeong Lee ◽  
Sang-Chul Shin ◽  
Jooho Park ◽  
Sang Hyeon Kim ◽  
...  
Keyword(s):  
Power Generation ◽  
Light Absorption ◽  
Open Circuit Voltage ◽  
Short Circuit ◽  
Short Circuit Current ◽  
Open Circuit ◽  
Charge Mobility ◽  
Alkyl Substitution ◽  
Nonfullerene Acceptor

Terminal alkyl substituents in IDIC nonfullerene acceptors improve light absorption, crystalline packing and charge mobility in films.

High Open‐Circuit Voltage Organic Photovoltaics Fabricated Using an Alkylidene Fluorene Derivative as a Non‐fullerene Acceptor

2019 ◽  
Vol 41 (2) ◽  
pp. 143-149
Author(s):  
Seong Lim Lee ◽  
Hee Su Kim ◽  
Jong‐Woon Ha ◽  
Hea Jung Park ◽  
Do‐Hoon Hwang
Keyword(s):  
Organic Photovoltaics ◽  
Open Circuit Voltage ◽  
Open Circuit ◽  
Fluorene Derivative

Diindenothieno[2,3-b]thiophene arene for efficient organic photovoltaics with an extra high open-circuit voltage of 1.14 ev

2012 ◽  
Vol 48 (26) ◽  
pp. 3203 ◽  
Author(s):  
Yen-Ju Cheng ◽  
Sheng-Wen Cheng ◽  
Chih-Yu Chang ◽  
Wei-Shun Kao ◽  
Ming-Hung Liao ◽  
...  
Keyword(s):  
Organic Photovoltaics ◽  
Open Circuit Voltage ◽  
Open Circuit
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