BCP - Bathocuproine
Order Code: B232MSDS sheet
|Unsublimed (>99.7% purity)||B232||1 g||£48|
|Sublimed (>99.8% purity)||B231||1 g
|Unsublimed (>99.7% purity)||B232||5 g||£226|
|Sublimed (>99.8% purity)||B231||5 g||£399|
|Molecular weight||360.45 g/mol|
|HOMO / LUMO||HOMO ~6.4 eV LUMO ~2.9 eV|
|Classification / Family||
Electron transport layer materials, Electron injection layer materials, Hole blocking layer materials, OFET, OLED, Organic Photovoltaics, Perovskite solar cells, Sublimed materials.
|Melting point||280-282°C (lit.)|
|Appearance||Light yellow powder|
*Sublimation is a technique used to obtain ultra pure-grade chemicals, to mainly filter out trace metals and inorganic impurities. Sublimation happens under certain pressure for chemicals that only go through two physical stages: from a solid state to vapour (gas), and when the vapour condenses to a solid state on a cool surface (referred to as cold finger). The most typical examples of sublimation are iodine and dry ice. For more details about sublimation, please refer to sublimed materials for OLEDs and perovskites and our collection of sublimed materials.
2,9-Dimethyl-4,7-diphenyl-1,10-phenanthroline, also known as Bathocuproine (BCP), is a wide-band-gap material and has a high electron affinity. When it is embedded into organic electronic devices, bathocuproine acts as an exciton blocking barrier which prohibits excitons diffusion process towards the Al electrode otherwise being quenched. One of the most commonly used buffer layer between acceptor and cathode layer is bathocuproine and the introduction of the buffer layer can greatly improve the PCE of polymer organic solar cells. BCP is one of the most popuplar hole blocking layer materials that is used in organic elctronics including perovskite solar cells.
It has demonstrated that a BCP buffer layer reduces nonradiative recombination of excitons at the C60 –Al interface. Its most important function is to establish an Ohmic contact between the C60 film and the Al electrode in photovoltaic devices .
|Device structure||ITO/DNTPD* (60 nm)/NPB (20 nm)/mCP (10 nm)/mCP:FIrpic (25 nm)/CBP:Ir(piq)2acac (5 nm)/BCP (5 nm)/Alq3 (20 nm)/LiF (1 nm)/Al (200 nm) |
|EQE@500 cd/m2||8.2 %|
|Current Efficiency@500 cd/m2||12.7 lm W−1|
|Device structure||ITO/NPB (30 nm)/NPB: DCJTB: C545T* (10 nm)/NPB (4 nm)/DNA (8 nm)/BCP (9 nm)/Alq3 (30 nm)/LiF (1 nm)/Al (100 nm) |
|Max. Luminance||13,600 cd/m2|
|Max. Current Efficiency||12.3 cd/A|
|Max. Power Efficiency||4.4 lm W−1|
|Device structure||ITO/2T-NATA (17 nm)/TPAHQZn* (25 nm)/NPBX* (15 nm)/BCP (8 nm)/ Alq3 (35 nm)/LiF (0.5 nm)/Al (120 nm) |
|Max. Luminance||12,930 cd/m2 (12 V)|
|Max. Current Efficiency||2.66 cd/A (10 V)|
|Device structure||ITO/ NPB(60 nm)/Alq3:DCM(7nm)/BCP(12 nm)/ Alq3(36nm)/ MgAg(200 nm) |
|Max. Luminance||1, 000 cd/m2|
|Max. Current Efficiency||5.66 cd/A|
|Device structure||ITO/α-NPD* (50 nm)/7%-Ir(ppy)3:CBP (20 nm)/BCP (10 nm)/Alq3 (40 nm)/Mg–Ag (100 nm)/Ag (20 nm) |
|Max. Powder Efficiency||(45±2) lm W−1|
*For chemical structure informations please refer to the cited references.
Literature and Reviews
- Detailed analysis of bathocuproine layer for organic solar cells based on copper phthalocyanine and C60, J. Huang et al., J. Appl. Phys., 105, 073105 (2009)
- On the Role of Bathocuproine in Organic Photovoltaic Cells, H. Gommans et al., Adv. Funct. Mater., 18, 3686-3691 (2008)
- A Blue Organic Light Emitting Diode, Y. Kijima et al., J. Appl. Phys., 38, 5274-5277 (1999)
- On the function of a bathocuproine buffer layer in organic photovoltaic cells, M. Vogel et al., Appl. Phys. Lett., 89, 163501 (2006).
- Improved color stability in white phosphorescent organic light-emitting diodes using charge confining structure without interlayer, S-H. Kim et al., Appl. Phys. Lett. 91, 123509 (2007); http://dx.doi.org/10.1063/1.2786853.
- High efficiency white organic light-emitting devices by effectively controlling exciton recombination region, F. Guo et al., Semicond. Sci. Technol. 20, 310–313 (2005).
- White organic light-emitting devices based on novel (E)-2-(4-(diphenylamino) styryl)quinolato zinc as a hole- transporting emitter, G. Ding et al., Semicond. Sci. Technol. 24, 025016 (2009); stacks.iop.org/SST/24/025016.
- High-efficiency red electroluminescence from a narrow recombination zone confined by an organic double heterostructure, Z. Xie et al., Appl. Phys. Lett., 79, 1048 (2001); doi: 10.1063/1.1390479.
- Efficient electrophosphorescence using a doped ambipolar conductive molecular organic thin film, C. Adachi et aL., Org. Electronics, 2(1), 37-43 (2001), doi:10.1016/S1566-1199(01)00010-6.