TY - JOUR
T1 - Optical Properties of Crystalline Thin Films of the Organic Laser Gain Material 4,4'-Bis[(N-carbazole)styryl]biphenyl
AU - Wang, Shu-Jen
AU - Palatnik, Alexander
AU - Sudzius, Markas
AU - Talnack, Felix
AU - Barba, Luisa
AU - Zhang, Zongbao
AU - Pohl, Darius
AU - Lashkov, Ilia
AU - Hänisch, Christian
AU - Kirch, Anton
AU - Vahland, Jörn
AU - Otte, Marius
AU - Kleemann, Hans
AU - Mannsfeld, Stefan C.B.
AU - Reineke, Sebastian
AU - Leo, Karl
N1 - Funding Information:
We thank Stefan Meister and Changsoon Cho for fruitful discussions. S.-J.W. acknowledges funding from DFG Project, WA 4719/2-1. S.-J.W. is grateful for support from the Hector Fellow Academy. The authors acknowledge Elettra Sincrotrone Trieste for providing access to its synchrotron facilities. F.T. and S.C.B.M. acknowledge the financial support from the German Research Foundation (DFG, MA 3342/6-1) and support by the German Excellence Initiative via the Cluster of Excellence EXC 1056 “Center for Advancing Electronics Dresden (cfaed)”. The research leading to this result has been supported by the project CALIPSOplus under grant agreement 730872 from the EU Framework Programme for Research and Innovation HORIZON 2020. The authors would like to thank Dr. Mike Hambsch for his support and organization of the GIWAXS experiments. Z.Z. would like to thank the financial support from China Scholarship Council (no. 201806750012). K.L. acknowledges support by the German Excellence Initiative through the Wuerzburg-Dresden Cluster of Excellence EXC 2147 ct.qmat – “Complexity and Topology in Quantum Matter” and the Cluster of Excellence EXC 1056 “Center for Advancing Electronics Dresden (cfaed)”. We acknowledge the use of the facilities in the Dresden Center for Nanoanalysis (DCN) at the Technische Universität Dresden.
Publisher Copyright:
© 2022 American Chemical Society.
PY - 2023/1
Y1 - 2023/1
N2 - Enhancing photoluminescence quantum yield and excellent transport associated with molecular order are important for advancing organic laser device performance. However, materials combining excellent quantum yield and transport are rare. 4,4'-Bis[(N-carbazole)styryl]biphenyl (BSB-Cz) has been heavily investigated as a promising material for laser devices. However, research on highly ordered BSB-Cz crystalline films is lacking, despite the much better transport properties to be expected. Here, we show that BSB-Cz thin-film crystals can be prepared using a simple vacuum deposition method, followed by thermal annealing. The resulting crystalline neat BSB-Cz thin films show a very high photoluminescence quantum yield of over 85% and superior optical stability compared to amorphous BSB-Cz films under intense pumping conditions. We believe that our work provides a route for advancing organic laser devices through introducing crystallinity in emitter thin films with a scalable approach.
AB - Enhancing photoluminescence quantum yield and excellent transport associated with molecular order are important for advancing organic laser device performance. However, materials combining excellent quantum yield and transport are rare. 4,4'-Bis[(N-carbazole)styryl]biphenyl (BSB-Cz) has been heavily investigated as a promising material for laser devices. However, research on highly ordered BSB-Cz crystalline films is lacking, despite the much better transport properties to be expected. Here, we show that BSB-Cz thin-film crystals can be prepared using a simple vacuum deposition method, followed by thermal annealing. The resulting crystalline neat BSB-Cz thin films show a very high photoluminescence quantum yield of over 85% and superior optical stability compared to amorphous BSB-Cz films under intense pumping conditions. We believe that our work provides a route for advancing organic laser devices through introducing crystallinity in emitter thin films with a scalable approach.
KW - organic crystals
KW - organic thin-film crystals
KW - organic semiconductors
KW - amplified spontaneous emission
KW - organic laser dyes
KW - organic photonics
UR - http://www.scopus.com/inward/record.url?scp=85144843915&partnerID=8YFLogxK
U2 - 10.1021/acsaelm.2c01401
DO - 10.1021/acsaelm.2c01401
M3 - Journal article
AN - SCOPUS:85144843915
SN - 2637-6113
VL - 5
SP - 375
EP - 380
JO - ACS Applied Electronic Materials
JF - ACS Applied Electronic Materials
IS - 1
ER -
