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For a particular intensity of incident light on a silicon p-n junction solar cell, the photocurrent density (JL) is 2.5 mA/cm2 and the open-circuit voltage (Voc) is 0.451 V. Consider thermal voltage (VT) to be 25 mV. If the intensity of the incident light is increased by 20 times, assuming that the temperature remains unchanged, Voc (in volts) will be ___________.
(Take the ideality factor, η = 2 for Silicon)
    Correct answer is between '0.51,0.62'. Can you explain this answer?
    Most Upvoted Answer
    For a particular intensity of incident light on a silicon p-n junction...
    Voc = (Open circuit voltage) of a solar cell
    Where η = 2 for Si p-n diode.
    JL = Photo current density
    Js = Saturation (Reverse) current density.
    Calculation:
    Given Voc = 0.451 V
    For JL = 2.5 mA /cm2, n = 2 and VT2 = 25 mV.

    Solving, we get Js = 3.024 × 10-7
    If the intensity of the incident light is increased by 20 times, JL (Photocurrent density) also increases by 20 times

    Putting values, we get
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    Community Answer
    For a particular intensity of incident light on a silicon p-n junction...
    Voc = (Open circuit voltage) of a solar cell
    Where η = 2 for Si p-n diode.
    JL = Photo current density
    Js = Saturation (Reverse) current density.
    Calculation:
    Given Voc = 0.451 V
    For JL = 2.5 mA /cm2, n = 2 and VT2 = 25 mV.

    Solving, we get Js = 3.024 × 10-7
    If the intensity of the incident light is increased by 20 times, JL (Photocurrent density) also increases by 20 times

    Putting values, we get
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    For a particular intensity of incident light on a silicon p-n junction solar cell, the photocurrent density (JL) is 2.5 mA/cm2 and the open-circuit voltage (Voc) is 0.451 V. Consider thermal voltage (VT) to be 25 mV. If the intensity of the incident light is increased by 20 times, assuming that the temperature remains unchanged, Voc (in volts) will be ___________.(Take the ideality factor, η = 2 for Silicon)Correct answer is between '0.51,0.62'. Can you explain this answer?
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    For a particular intensity of incident light on a silicon p-n junction solar cell, the photocurrent density (JL) is 2.5 mA/cm2 and the open-circuit voltage (Voc) is 0.451 V. Consider thermal voltage (VT) to be 25 mV. If the intensity of the incident light is increased by 20 times, assuming that the temperature remains unchanged, Voc (in volts) will be ___________.(Take the ideality factor, η = 2 for Silicon)Correct answer is between '0.51,0.62'. Can you explain this answer? for Electronics and Communication Engineering (ECE) 2024 is part of Electronics and Communication Engineering (ECE) preparation. The Question and answers have been prepared according to the Electronics and Communication Engineering (ECE) exam syllabus. Information about For a particular intensity of incident light on a silicon p-n junction solar cell, the photocurrent density (JL) is 2.5 mA/cm2 and the open-circuit voltage (Voc) is 0.451 V. Consider thermal voltage (VT) to be 25 mV. If the intensity of the incident light is increased by 20 times, assuming that the temperature remains unchanged, Voc (in volts) will be ___________.(Take the ideality factor, η = 2 for Silicon)Correct answer is between '0.51,0.62'. Can you explain this answer? covers all topics & solutions for Electronics and Communication Engineering (ECE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For a particular intensity of incident light on a silicon p-n junction solar cell, the photocurrent density (JL) is 2.5 mA/cm2 and the open-circuit voltage (Voc) is 0.451 V. Consider thermal voltage (VT) to be 25 mV. If the intensity of the incident light is increased by 20 times, assuming that the temperature remains unchanged, Voc (in volts) will be ___________.(Take the ideality factor, η = 2 for Silicon)Correct answer is between '0.51,0.62'. Can you explain this answer?.
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