Tetrahydroquinoxaline Based Small Molecule: PCBM Bulk Heterojunction Solar Cell

Journal Article · Fri Jul 15 04:00:00 EDT 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3605932· OSTI ID:22589282

Sharma, S. S. ^[1]; Sharma, G. D. ^[2]; Subodh,; Sharma, Sarla; Vijay, Y. K. ^[3]

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1. Department of Physics, Govt. Women Engineering College, Ajmer (Raj.), 305002 (India)
2. Physics Department, Molecular Electronic and Optoelectronic Device Laboratory, JNV University, Jodhpur (Raj.) 342005 (India)
3. Department of Physics, Thin film & Membrane Science Laboratory, University of Rajasthan, Jaipur (Raj.) 302004 (India)

We have fabricated solution processed bulk heterojuction (BHJ) solar cell from small molecule (SM) as donor blended with PCBM as an acceptor. The BHJ showed power conversion efficiency (PCE) up to 2.80%. The PCE has been further improved up to 3.80 % after thermal annealing of the SM: PCBM layer. The higher PCE of the photovoltaic devices based on the thermal annealed SM: PCBM blend as compared to SM: PCBM blend is attributed to the increase in the crystalline nature of the blend and hole mobility. The thermal annealing allows not only a broad absorption but also tuning of the inter energy level leading to a higher short circuit current (Jsc) and open circuit voltage (Voc).

• OSTI ID: 22589282
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1349; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION
ANNEALING
COMPARATIVE EVALUATIONS
ELECTRIC CURRENTS
ELECTRIC POTENTIAL
ENERGY CONVERSION
ENERGY EFFICIENCY
HETEROJUNCTIONS
HOLE MOBILITY
HOLES
LAYERS
MOLECULES
ORGANIC SOLAR CELLS
PHOTOVOLTAIC EFFECT