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Hyun Wook Ro

Explore the profile of Hyun Wook Ro including associated specialties, affiliations and a list of published articles. Areas
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Citations 55
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Recent Articles
1.
Ro H, Downing J, Engmann S, Herzing A, DeLongchamp D, Richter L, et al.
Energy Environ Sci . 2020 Sep; 9. PMID: 32863865
Solution processing via roll-to-roll (R2R) coating promises a low cost, low thermal budget, sustainable revolution for the production of solar cells. Poly[(5,6-difluoro-2,1,3-benzothiadiazol-4,7-diyl)-alt-(3,3‴-di(2-octyldodecyl)-2,2';5',2″;5″,2‴-quaterthiophen-5,5-diyl)], PffBT4T-2OD, has recently been shown to achieve high...
2.
Engmann S, Ro H, Herzing A, DeLongchamp D, Snyder C, Richter L, et al.
J Mater Chem A Mater . 2017 Nov; 5(15):6893-6904. PMID: 29170714
To realize the full promise of solution deposited photovoltaic devices requires processes compatible with high-speed manufacturing. We report the performance and morphology of blade-coated bulk heterojunction devices based on the...
3.
Engmann S, Ro H, Herzing A, Snyder C, Richter L, Geraghty P, et al.
J Mater Chem A Mater . 2017 Feb; 4(40):15511-15521. PMID: 28210491
Solution-processable small molecule photovoltaics based on the novel molecular donor, benzodithiophene terthiophene rhodanine (BTR), recently have shown maximum power conversion efficiencies above 8 % for active layer thicknesses up to...
4.
Herzing A, Ro H, Soles C, DeLongchamp D
ACS Nano . 2013 Aug; 7(9):7937-44. PMID: 23930979
The morphology of the active layer in an organic photovoltaic bulk-heterojunction device is controlled by the extent and nature of phase separation during processing. We have studied the effects of...
5.
Lee J, Ro H, Huang R, Lemaillet P, Germer T, Soles C, et al.
Nano Lett . 2012 Oct; 12(11):5995-9. PMID: 23088734
By combining surface wrinkling and nanopatterned polymer films, we create anisotropic, hierarchical surfaces whose larger length-scale (wrinkling wavelength) depends intimately on the geometry and orientation of the smaller length-scale (nanopattern)....
6.
Ding Y, Sun J, Ro H, Wang Z, Zhou J, Lin N, et al.
Adv Mater . 2010 Aug; 23(3):421-5. PMID: 20717992
No abstract available.
7.
Ro H, Popova V, Chen L, Forster A, Ding Y, Alvine K, et al.
Adv Mater . 2010 Aug; 23(3):414-20. PMID: 20715068
No abstract available.
8.
Zhang X, Yager K, Fredin N, Ro H, Jones R, Karim A, et al.
ACS Nano . 2010 Jun; 4(7):3653-60. PMID: 20553019
Many phase transitions exhibit ordering transitions at the boundary of the material that are distinct from its interior where intermolecular interactions can be significantly different. The present work considers the...
9.
Chung J, Chastek T, Fasolka M, Ro H, Stafford C
ACS Nano . 2009 Mar; 3(4):844-52. PMID: 19298053
Residual stress, a pervasive consequence of solid materials processing, is stress that remains in a material after external forces have been removed. In polymeric materials, residual stress results from processes,...
10.
Ding Y, Ro H, Germer T, Douglas J, Okerberg B, Karim A, et al.
ACS Nano . 2009 Feb; 1(2):84-92. PMID: 19206524
We study the decay of imprinted polystyrene (PS) patterns under thermal annealing using light diffraction. The first-order diffraction intensity from the imprinted gratings was measured as a function of annealing...