scholarly journals Are solution processed CsPbI3 perovskite nanocrystalline films similar to traditional crystalline semiconductors?

2021 ◽  
Author(s):  
Kanishka Kobbekaduwa ◽  
Exian Liu ◽  
Qian Zhao ◽  
Pan Adhikari ◽  
Chendi Xie ◽  
...  
Keyword(s):  
Temperature Region ◽  
Carrier Transport ◽  
Phonon Scattering ◽  
Lattice Structure ◽  
Halogen Bond ◽  
Longitudinal Optical ◽  
Solution Processed ◽  
Photocurrent Spectroscopy ◽  
Nanocrystal Films ◽  
Lower Temperature

Abstract We use ultrafast photocurrent spectroscopy with a sub-25 picosecond resolution to address a long-standing question in emergent perovskite materials: are solution-processed CsPbI3 perovskites nanocrystal films similar to their counterparts semiconductors including GaAs and Si? Prior to carrier trapping, all semiconductors show similar transition of transport mechanism from the band-like transport due to the longitudinal optical (LO) phonon scattering in the higher temperature region to a combination of band-like and hopping transport mechanisms in the lower temperature region. The critical difference is that CsPbI3 demonstrate the strongest carrier-LO phonon interaction among all semiconductors, most likely due to the unique cation-halogen bond arrangements within the highly symmetric lattice structure. This ultrafast dynamics work establish a foundation of fundamental carrier transport understating for perovskite optoelectronics.

Development of efficient solution-processed red phosphorescent organic light-emitting diodes using carrier transport materials

2010 ◽  
Vol 160 (15-16) ◽  
pp. 1623-1626 ◽  
Author(s):  
Myungkwan Song ◽  
Jin Su Park ◽  
Chul-Hyun Kim ◽  
Jang Soo Kim ◽  
Yeong-Soon Gal ◽  
...  
Keyword(s):  
Carrier Transport ◽  
Efficient Solution ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
Solution Processed ◽  
Light Emitting ◽  
Organic Light

Photocurrent Spectroscopy of (n,m) Sorted Solution-Processed Single-Walled Carbon Nanotubes

ACS Nano ◽  
2014 ◽  
Vol 8 (9) ◽  
pp. 9324-9331 ◽  
Author(s):  
Michael Engel ◽  
Katherine E. Moore ◽  
Asiful Alam ◽  
Simone Dehm ◽  
Ralph Krupke ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Single Walled Carbon Nanotubes ◽  
Solution Processed ◽  
Single Walled Carbon ◽  
Photocurrent Spectroscopy ◽  
Walled Carbon Nanotubes

Intrinsic carrier transport properties of solution-processed organic–inorganic perovskite films

2017 ◽  
Vol 10 (2) ◽  
pp. 024103 ◽  
Author(s):  
Toshinori Matsushima ◽  
Sunbin Hwang ◽  
Shinobu Terakawa ◽  
Takashi Fujihara ◽  
Atula S. D. Sandanayaka ◽  
...  
Keyword(s):  
Transport Properties ◽  
Carrier Transport ◽  
Solution Processed ◽  
Inorganic Perovskite ◽  
Carrier Transport Properties

scholarly journals Solution-Processed Cu2Se Nanocrystal Films with Bulk-Like Thermoelectric Performance

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
Jason D. Forster ◽  
Jared J. Lynch ◽  
Nelson E. Coates ◽  
Jun Liu ◽  
Hyejin Jang ◽  
...  
Keyword(s):  
Thermoelectric Performance ◽  
Solution Processed ◽  
Nanocrystal Films

Solution-processed two-dimensional layered heterostructure thin-film with optimized thermoelectric performance

2017 ◽  
Vol 19 (27) ◽  
pp. 17560-17567 ◽  
Author(s):  
Tongzhou Wang ◽  
Congcong Liu ◽  
Fengxing Jiang ◽  
Zhaofen Xu ◽  
Xiaodong Wang ◽  
...  
Keyword(s):  
Thin Film ◽  
Power Factor ◽  
Carrier Transport ◽  
Thermoelectric Performance ◽  
Two Dimensional ◽  
Transport Barrier ◽  
Solution Processed

The content of rGO could alter the carrier transport barrier, and the optimizing power factor was achieved at rGO–MS2 junctions.

EFFECTS OF CHOKE RING DIMENSION ON THERMAL AND FLUID FLOW IN A SRU THERMAL REACTOR

2016 ◽  
Vol 40 (4) ◽  
pp. 511-520 ◽  
Author(s):  
Chun-Lang Yeh
Keyword(s):  
Fluid Flow ◽  
Temperature Region ◽  
Oxygen Supply ◽  
Skin Friction Coefficient ◽  
Thermal Reactor ◽  
Sulfur Recovery ◽  
Sulfur Concentration ◽  
Average Temperature ◽  
The Rich ◽  
Lower Temperature

The effects of choke ring dimension on the thermal and fluid flow in a practical SRU (sulfur recovery unit) thermal reactor are investigated numerically. It is found that zone 1 is a higher temperature region. In contrast, zone 2 is a lower temperature region. The average temperature for the rich oxygen supply is higher than that of normal oxygen supply. Without a choke ring, the temperature difference between zone 1 and zone 2 is smaller and the temperature in zone 1 becomes lower while the temperature in zone 2 becomes higher. In addition, the average temperature in zone 1 and the sulfur concentration at exit are the lowest without a choke ring. The reactor with a choke ring height of 0.74 m has the lowest peak temperature and the largest sulfur concentration at exit. Finally, with a choke ring height of 1.11 m, the blockage effect of the choke ring leads to the largest peak skin friction coefficient.

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