Diffusion Length and Langevin Recombination of Singlet and Triplet Excitons in Organic Heterojunction Solar Cells

ChemPhysChem ◽  
2015 ◽  
Vol 16 (6) ◽  
pp. 1281-1285 ◽  
Author(s):  
David Ompong ◽  
Jai Singh
Keyword(s):  
Solar Cells ◽  
Diffusion Length ◽  
Heterojunction Solar Cells ◽  
Triplet Excitons

Measuring the exciton diffusion length of C60 in organic planar heterojunction solar cells

2011 ◽  
Vol 208 (8) ◽  
pp. 1967-1971 ◽  
Author(s):  
Dashan Qin ◽  
Peng Gu ◽  
Rudra Sankar Dhar ◽  
Seyed Ghasem Razavipour ◽  
Dayan Ban
Keyword(s):  
Solar Cells ◽  
Diffusion Length ◽  
Heterojunction Solar Cells ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length ◽  
Planar Heterojunction Solar Cells ◽  
Planar Heterojunction

scholarly journals Исследование влияния радиации на рекомбинационные потери в гетеропереходных солнечных элементах на основе монокристаллического кремния

2019 ◽  
Vol 45 (5) ◽  
pp. 9
Author(s):  
И.Е. Панайотти ◽  
Е.И. Теруков
Keyword(s):  
Solar Cells ◽  
Diffusion Length ◽  
Short Circuit ◽  
Practical Importance ◽  
Heterojunction Solar Cells ◽  
Semiconductor Structures ◽  
Space Conditions ◽  
Short Circuit Currents ◽  
Degree Of Degradation ◽  
Silicon Heterojunction Solar Cells

AbstractA method has been developed for numerically estimating the recombination loss in silicon heterojunction solar cells under irradiation. The calculations are based on an analysis of the experimental short-circuit currents. The suggested model makes it possible to evaluate the degree of degradation of semiconductor structures by calculating the decrease in the bulk lifetime and in the diffusion length of carriers. The results obtained are of practical importance for examining the possibility of using this type of solar cells in space conditions.

Triplet excitons: improving exciton diffusion length for enhanced organic photovoltaics

2019 ◽  
Vol 7 (6) ◽  
pp. 2445-2463 ◽  
Author(s):  
Bruno T. Luppi ◽  
Darren Majak ◽  
Manisha Gupta ◽  
Eric Rivard ◽  
Karthik Shankar
Keyword(s):  
Solar Cells ◽  
Organic Photovoltaics ◽  
Organic Materials ◽  
Diffusion Length ◽  
Future Research ◽  
Heavy Atoms ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length ◽  
Fundamental Limitation ◽  
Triplet Excitons

Organic materials containing heavy atoms have been used in photovoltaics to overcome a fundamental limitation: short exciton diffusion length (LD). We highlight studies showing increased LD in solar cells using triplet-generating materials and tackle challenges that the field faces with possible avenues for future research.

Non-geminate Recombination Limits Fill Factor in Polymer:ITIC Bulk Heterojunction Solar Cells

2019 ◽  
Author(s):  
Jafar Khan ◽  
Yuliar Firdaus ◽  
Federico Cruciani ◽  
Shengjian Liu ◽  
Denis Andrienko ◽  
...  
Keyword(s):  
Solar Cells ◽  
Fill Factor ◽  
Bulk Heterojunction ◽  
Geminate Recombination ◽  
Heterojunction Solar Cells ◽  
Bulk Heterojunction Solar Cells

Determining the exciton diffusion length of copper phthalocyanine in operating planar-heterojunction organic solar cells

2020 ◽  
Vol 89 (3) ◽  
pp. 30201 ◽  
Author(s):  
Xi Guan ◽  
Shiyu Wang ◽  
Wenxing Liu ◽  
Dashan Qin ◽  
Dayan Ban
Keyword(s):  
Solar Cells ◽  
Organic Solar Cells ◽  
Diffusion Length ◽  
Copper Phthalocyanine ◽  
Short Circuit ◽  
Thick Layer ◽  
Short Circuit Current ◽  
Short Circuit Current Density ◽  
Exciton Diffusion ◽  
Exciton Diffusion Length

Organic solar cells based on planar copper phthalocyanine (CuPc)/C60 heterojunction have been characterized, in which a 2 nm-thick layer of bathocuproine (BCP) is inserted into the CuPc layer. The thin layer of BCP allows hole current to tunnel it through but blocks the exciton diffusion, thereby altering the steady-state exciton profile in the CuPc zone (zone 1) sandwiched between BCP and C60. The short-circuit current density (JSC) of device is limited by the hole-exciton scattering effect at the BCP/CuPc (zone 1) interface. Based on the variation of JSC with the width of zone 1, the exciton diffusion length of CuPc is deduced to be 12.5–15 nm. The current research provides an easy and helpful method to determine the exciton diffusion lengths of organic electron donors.

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