2017
DOI: 10.1021/acsami.6b12845
|View full text |Cite
|
Sign up to set email alerts
|

Enhanced Charge Carrier Transport and Device Performance Through Dual-Cesium Doping in Mixed-Cation Perovskite Solar Cells with Near Unity Free Carrier Ratios

Abstract: PbI-enriched mixed perovskite film [FAMAPb(IBr)] has been widely studied due to its great potential in perovskite solar cell (PSC) applications. Herein, a FAMAPb(IBr) film has been fabricated with the temperature-dependent optical absorption spectra utilized to determine its exciton binding energy. A ∼13 meV exciton binding energy is estimated, and a near-unity fraction of free carriers out of the total photoexcitons has been obtained in the solar cell operating regime at equilibrium state. PSCs are fabricated… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...
2
1
1
1

Citation Types

0
38
0

Year Published

2017
2017
2020
2020

Publication Types

Select...
6

Relationship

2
4

Authors

Journals

citations
Cited by 34 publications
(38 citation statements)
references
References 57 publications
0
38
0
Order By: Relevance
“…When an external electric field (voltage) is applied across the device, one of the charge carriers can be removed at an electrode and another type cof harge carrier may drift across the photoactive layer and finally reach the opposite electrode. Then, the oscilloscope can collect the drift mobility of the charge carrier in the travelling process . Furthermore, the charge carriers mobilities within the system can be easily calculated using the heterojunction thickness, applied back voltage, and free charge transit time.…”
Section: Resultsmentioning
confidence: 99%
“…When an external electric field (voltage) is applied across the device, one of the charge carriers can be removed at an electrode and another type cof harge carrier may drift across the photoactive layer and finally reach the opposite electrode. Then, the oscilloscope can collect the drift mobility of the charge carrier in the travelling process . Furthermore, the charge carriers mobilities within the system can be easily calculated using the heterojunction thickness, applied back voltage, and free charge transit time.…”
Section: Resultsmentioning
confidence: 99%
“…For example, cesium acetate incorporation during the preparation of ZnO results in improved electron injection and improved device performance . CsCO 3 treatment of the TiO 2 electron‐transport layer, combined with CsI doping of perovskite, has resulted in the high‐performance perovskite devices . Performance improvement has also been reported for CsBr‐modified TiO 2 …”
Section: Fabrication Methodology Of the Fa‐based Perovskitesmentioning
confidence: 99%
“…As an alternative, Ye et al utilized Cs 2 CO 3 and CsI as functional enhancers,s ubstantially balancing the electrons and holes transport and increasing the mobility of the carriers. [207] The modified PSCs exhibited reproducible PCE values with little hysteresis in the J-V curves, achieving efficiencies up to 19.5 and 20.6 %f or the Cs 2 CO 3modified and CsI-doped cells, respectively.T he dream for PSCs remains that of approaching as table and reproducible technology because it has also been important for DSSCs [208][209][210][211][212][213][214][215][216][217][218][219][220][221] and other energy-relatedd evices. [222][223][224][225][226][227][228][229][230][231] Caesium-Doped Perovskites in Emerging Technologies Enhanced optical absorption, long carrierd iffusion length and high carrierm obility of perovskite materials can also be exploitedi no ther applications than standard solar cells.…”
Section: Caesium-doping In Other Perovskite Solar Cell Componentsmentioning
confidence: 89%
“…As an alternative, Ye et al. utilized Cs 2 CO 3 and CsI as functional enhancers, substantially balancing the electrons and holes transport and increasing the mobility of the carriers . The modified PSCs exhibited reproducible PCE values with little hysteresis in the J‐V curves, achieving efficiencies up to 19.5 and 20.6 % for the Cs 2 CO 3 ‐modified and CsI‐doped cells, respectively.…”
Section: Caesium‐doping In Other Perovskite Solar Cell Componentsmentioning
confidence: 99%